[28-Dec-2013 17:25:39 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[14-Jan-2014 05:00:16 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 30 of /mod/certificate/index.php: call to required_param()

[14-Jan-2014 05:00:26 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 30 of /mod/certificate/index.php: call to required_param()

[20-Jan-2014 18:47:19 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 30 of /mod/certificate/index.php: call to required_param()

[22-Jan-2014 15:27:52 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[27-Jan-2014 20:47:57 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 30 of /mod/certificate/index.php: call to required_param()

[06-Feb-2014 08:01:00 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 30 of /mod/certificate/index.php: call to required_param()

[08-Feb-2014 09:31:40 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[25-Feb-2014 11:21:30 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 30 of /mod/certificate/index.php: call to required_param()

[05-Mar-2014 21:27:06 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[13-Mar-2014 13:41:59 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[24-Mar-2014 13:38:21 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 30 of /mod/certificate/index.php: call to required_param()

[01-Apr-2014 20:47:59 UTC] Default exception handler: Sorry, but you do not currently have permissions to do that (Manage a certificate instance) Debug: 
Error code: nopermissions
* line 704 of /lib/accesslib.php: required_capability_exception thrown
* line 74 of /mod/certificate/report.php: call to require_capability()

[01-Apr-2014 21:00:37 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 30 of /mod/certificate/index.php: call to required_param()

[06-Apr-2014 12:59:23 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[09-Apr-2014 16:29:20 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[12-Apr-2014 02:46:31 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 30 of /mod/certificate/index.php: call to required_param()

[15-Apr-2014 07:38:59 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 30 of /mod/certificate/index.php: call to required_param()

[23-Apr-2014 20:35:00 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 30 of /mod/certificate/index.php: call to required_param()

[24-Apr-2014 03:53:38 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[29-Apr-2014 04:44:40 UTC] Default exception handler: Sorry, but you do not currently have permissions to do that (Manage a certificate instance) Debug: 
Error code: nopermissions
* line 704 of /lib/accesslib.php: required_capability_exception thrown
* line 74 of /mod/certificate/report.php: call to require_capability()

[08-May-2014 05:48:45 UTC] Default exception handler: Sorry, but you do not currently have permissions to do that (Manage a certificate instance) Debug: 
Error code: nopermissions
* line 704 of /lib/accesslib.php: required_capability_exception thrown
* line 74 of /mod/certificate/report.php: call to require_capability()

[24-May-2014 23:46:32 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[30-May-2014 08:03:29 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[02-Jun-2014 01:02:53 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 30 of /mod/certificate/index.php: call to required_param()

[17-Jun-2014 12:25:31 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 30 of /mod/certificate/index.php: call to required_param()

[22-Jun-2014 15:45:44 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[25-Jun-2014 20:04:55 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[25-Jun-2014 20:06:35 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[25-Jun-2014 20:27:33 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[25-Jun-2014 22:28:28 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[25-Jun-2014 23:45:11 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[29-Jun-2014 09:57:35 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[15-Jul-2014 17:26:24 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[15-Jul-2014 17:26:53 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[15-Jul-2014 17:27:29 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[15-Jul-2014 17:28:07 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[15-Jul-2014 17:29:11 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[17-Jul-2014 04:22:36 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[21-Jul-2014 18:30:04 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[22-Jul-2014 22:07:17 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 30 of /mod/certificate/index.php: call to required_param()

[28-Jul-2014 14:49:40 UTC] Default exception handler: Error writing to database Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,contenthash,filesize,timecreated,timemodified,mimetype,userid,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13287',
  4 => '/',
  5 => '.',
  6 => 'da39a3ee5e6b4b0d3255bfef95601890afd80709',
  7 => 0,
  8 => 1406558929,
  9 => 1406558929,
  10 => NULL,
  11 => '19059',
  12 => 'e0c3775809e3f44742fcee55204a3fcbb0cbdc97',
)]
Error code: dmlwriteexception
* line 429 of /lib/dml/moodle_database.php: dml_write_exception thrown
* line 1107 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end()
* line 1149 of /lib/dml/mysqli_native_moodle_database.php: call to mysqli_native_moodle_database->insert_record_raw()
* line 761 of /lib/filestorage/file_storage.php: call to mysqli_native_moodle_database->insert_record()
* line 1185 of /lib/filestorage/file_storage.php: call to file_storage->create_directory()
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 14:50:48 UTC] Default exception handler: Error writing to database Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,contenthash,filesize,timecreated,timemodified,mimetype,userid,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13287',
  4 => '/',
  5 => '.',
  6 => 'da39a3ee5e6b4b0d3255bfef95601890afd80709',
  7 => 0,
  8 => 1406558997,
  9 => 1406558997,
  10 => NULL,
  11 => '19059',
  12 => 'e0c3775809e3f44742fcee55204a3fcbb0cbdc97',
)]
Error code: dmlwriteexception
* line 429 of /lib/dml/moodle_database.php: dml_write_exception thrown
* line 1107 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end()
* line 1149 of /lib/dml/mysqli_native_moodle_database.php: call to mysqli_native_moodle_database->insert_record_raw()
* line 761 of /lib/filestorage/file_storage.php: call to mysqli_native_moodle_database->insert_record()
* line 1185 of /lib/filestorage/file_storage.php: call to file_storage->create_directory()
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 14:52:26 UTC] Default exception handler: Error writing to database Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,contenthash,filesize,timecreated,timemodified,mimetype,userid,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13287',
  4 => '/',
  5 => '.',
  6 => 'da39a3ee5e6b4b0d3255bfef95601890afd80709',
  7 => 0,
  8 => 1406559095,
  9 => 1406559095,
  10 => NULL,
  11 => '19059',
  12 => 'e0c3775809e3f44742fcee55204a3fcbb0cbdc97',
)]
Error code: dmlwriteexception
* line 429 of /lib/dml/moodle_database.php: dml_write_exception thrown
* line 1107 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end()
* line 1149 of /lib/dml/mysqli_native_moodle_database.php: call to mysqli_native_moodle_database->insert_record_raw()
* line 761 of /lib/filestorage/file_storage.php: call to mysqli_native_moodle_database->insert_record()
* line 1185 of /lib/filestorage/file_storage.php: call to file_storage->create_directory()
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 14:53:17 UTC] Default exception handler: Error writing to database Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,contenthash,filesize,timecreated,timemodified,mimetype,userid,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13287',
  4 => '/',
  5 => '.',
  6 => 'da39a3ee5e6b4b0d3255bfef95601890afd80709',
  7 => 0,
  8 => 1406559146,
  9 => 1406559146,
  10 => NULL,
  11 => '19059',
  12 => 'e0c3775809e3f44742fcee55204a3fcbb0cbdc97',
)]
Error code: dmlwriteexception
* line 429 of /lib/dml/moodle_database.php: dml_write_exception thrown
* line 1107 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end()
* line 1149 of /lib/dml/mysqli_native_moodle_database.php: call to mysqli_native_moodle_database->insert_record_raw()
* line 761 of /lib/filestorage/file_storage.php: call to mysqli_native_moodle_database->insert_record()
* line 1185 of /lib/filestorage/file_storage.php: call to file_storage->create_directory()
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 14:54:08 UTC] Default exception handler: Error writing to database Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,contenthash,filesize,timecreated,timemodified,mimetype,userid,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13287',
  4 => '/',
  5 => '.',
  6 => 'da39a3ee5e6b4b0d3255bfef95601890afd80709',
  7 => 0,
  8 => 1406559197,
  9 => 1406559197,
  10 => NULL,
  11 => '19059',
  12 => 'e0c3775809e3f44742fcee55204a3fcbb0cbdc97',
)]
Error code: dmlwriteexception
* line 429 of /lib/dml/moodle_database.php: dml_write_exception thrown
* line 1107 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end()
* line 1149 of /lib/dml/mysqli_native_moodle_database.php: call to mysqli_native_moodle_database->insert_record_raw()
* line 761 of /lib/filestorage/file_storage.php: call to mysqli_native_moodle_database->insert_record()
* line 1185 of /lib/filestorage/file_storage.php: call to file_storage->create_directory()
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 14:54:59 UTC] Default exception handler: Error writing to database Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,contenthash,filesize,timecreated,timemodified,mimetype,userid,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13287',
  4 => '/',
  5 => '.',
  6 => 'da39a3ee5e6b4b0d3255bfef95601890afd80709',
  7 => 0,
  8 => 1406559248,
  9 => 1406559248,
  10 => NULL,
  11 => '19059',
  12 => 'e0c3775809e3f44742fcee55204a3fcbb0cbdc97',
)]
Error code: dmlwriteexception
* line 429 of /lib/dml/moodle_database.php: dml_write_exception thrown
* line 1107 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end()
* line 1149 of /lib/dml/mysqli_native_moodle_database.php: call to mysqli_native_moodle_database->insert_record_raw()
* line 761 of /lib/filestorage/file_storage.php: call to mysqli_native_moodle_database->insert_record()
* line 1185 of /lib/filestorage/file_storage.php: call to file_storage->create_directory()
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 15:17:30 UTC] Default exception handler: Error writing to database Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,contenthash,filesize,timecreated,timemodified,mimetype,userid,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13287',
  4 => '/',
  5 => '.',
  6 => 'da39a3ee5e6b4b0d3255bfef95601890afd80709',
  7 => 0,
  8 => 1406560599,
  9 => 1406560599,
  10 => NULL,
  11 => '19059',
  12 => 'e0c3775809e3f44742fcee55204a3fcbb0cbdc97',
)]
Error code: dmlwriteexception
* line 429 of /lib/dml/moodle_database.php: dml_write_exception thrown
* line 1107 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end()
* line 1149 of /lib/dml/mysqli_native_moodle_database.php: call to mysqli_native_moodle_database->insert_record_raw()
* line 761 of /lib/filestorage/file_storage.php: call to mysqli_native_moodle_database->insert_record()
* line 1185 of /lib/filestorage/file_storage.php: call to file_storage->create_directory()
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 15:19:17 UTC] Default exception handler: Error writing to database Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,contenthash,filesize,timecreated,timemodified,mimetype,userid,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13287',
  4 => '/',
  5 => '.',
  6 => 'da39a3ee5e6b4b0d3255bfef95601890afd80709',
  7 => 0,
  8 => 1406560706,
  9 => 1406560706,
  10 => NULL,
  11 => '19059',
  12 => 'e0c3775809e3f44742fcee55204a3fcbb0cbdc97',
)]
Error code: dmlwriteexception
* line 429 of /lib/dml/moodle_database.php: dml_write_exception thrown
* line 1107 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end()
* line 1149 of /lib/dml/mysqli_native_moodle_database.php: call to mysqli_native_moodle_database->insert_record_raw()
* line 761 of /lib/filestorage/file_storage.php: call to mysqli_native_moodle_database->insert_record()
* line 1185 of /lib/filestorage/file_storage.php: call to file_storage->create_directory()
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 15:20:08 UTC] Default exception handler: Error writing to database Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,contenthash,filesize,timecreated,timemodified,mimetype,userid,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13287',
  4 => '/',
  5 => '.',
  6 => 'da39a3ee5e6b4b0d3255bfef95601890afd80709',
  7 => 0,
  8 => 1406560757,
  9 => 1406560757,
  10 => NULL,
  11 => '19059',
  12 => 'e0c3775809e3f44742fcee55204a3fcbb0cbdc97',
)]
Error code: dmlwriteexception
* line 429 of /lib/dml/moodle_database.php: dml_write_exception thrown
* line 1107 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end()
* line 1149 of /lib/dml/mysqli_native_moodle_database.php: call to mysqli_native_moodle_database->insert_record_raw()
* line 761 of /lib/filestorage/file_storage.php: call to mysqli_native_moodle_database->insert_record()
* line 1185 of /lib/filestorage/file_storage.php: call to file_storage->create_directory()
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 15:20:59 UTC] Default exception handler: Error writing to database Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,contenthash,filesize,timecreated,timemodified,mimetype,userid,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13287',
  4 => '/',
  5 => '.',
  6 => 'da39a3ee5e6b4b0d3255bfef95601890afd80709',
  7 => 0,
  8 => 1406560808,
  9 => 1406560808,
  10 => NULL,
  11 => '19059',
  12 => 'e0c3775809e3f44742fcee55204a3fcbb0cbdc97',
)]
Error code: dmlwriteexception
* line 429 of /lib/dml/moodle_database.php: dml_write_exception thrown
* line 1107 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end()
* line 1149 of /lib/dml/mysqli_native_moodle_database.php: call to mysqli_native_moodle_database->insert_record_raw()
* line 761 of /lib/filestorage/file_storage.php: call to mysqli_native_moodle_database->insert_record()
* line 1185 of /lib/filestorage/file_storage.php: call to file_storage->create_directory()
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 15:21:32 UTC] Can not obtain session lock
[28-Jul-2014 15:21:32 UTC] Default exception handler: Timed out while waiting for session lock.<br />Wait for your current requests to finish and try again later. Debug: 
Error code: sessionwaiterr
* line 1448 of /lib/dml/mysqli_native_moodle_database.php: dml_sessionwait_exception thrown
* line 609 of /lib/sessionlib.php: call to mysqli_native_moodle_database->get_session_lock()
* line ? of unknownfile: call to database_session->handler_read()
* line 190 of /lib/sessionlib.php: call to session_start()
* line 482 of /lib/sessionlib.php: call to session_stub->__construct()
* line 66 of /lib/sessionlib.php: call to database_session->__construct()
* line 703 of /lib/setup.php: call to session_get_instance()
* line 32 of /config.php: call to require_once()
* line 27 of /mod/certificate/view.php: call to require_once()

[28-Jul-2014 15:21:46 UTC] Can not obtain session lock
[28-Jul-2014 15:21:46 UTC] Default exception handler: Timed out while waiting for session lock.<br />Wait for your current requests to finish and try again later. Debug: 
Error code: sessionwaiterr
* line 1448 of /lib/dml/mysqli_native_moodle_database.php: dml_sessionwait_exception thrown
* line 609 of /lib/sessionlib.php: call to mysqli_native_moodle_database->get_session_lock()
* line ? of unknownfile: call to database_session->handler_read()
* line 190 of /lib/sessionlib.php: call to session_start()
* line 482 of /lib/sessionlib.php: call to session_stub->__construct()
* line 66 of /lib/sessionlib.php: call to database_session->__construct()
* line 703 of /lib/setup.php: call to session_get_instance()
* line 32 of /config.php: call to require_once()
* line 27 of /mod/certificate/view.php: call to require_once()

[28-Jul-2014 15:21:51 UTC] Default exception handler: Error writing to database Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,contenthash,filesize,timecreated,timemodified,mimetype,userid,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13287',
  4 => '/',
  5 => '.',
  6 => 'da39a3ee5e6b4b0d3255bfef95601890afd80709',
  7 => 0,
  8 => 1406560860,
  9 => 1406560860,
  10 => NULL,
  11 => '19059',
  12 => 'e0c3775809e3f44742fcee55204a3fcbb0cbdc97',
)]
Error code: dmlwriteexception
* line 429 of /lib/dml/moodle_database.php: dml_write_exception thrown
* line 1107 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end()
* line 1149 of /lib/dml/mysqli_native_moodle_database.php: call to mysqli_native_moodle_database->insert_record_raw()
* line 761 of /lib/filestorage/file_storage.php: call to mysqli_native_moodle_database->insert_record()
* line 1185 of /lib/filestorage/file_storage.php: call to file_storage->create_directory()
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 17:29:29 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13583///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13583',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406568518,
  7 => 1406568518,
  8 => '16801',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242429,
  15 => 'f37b05a26b71d96ff6e47ef30fdbeb3fac0382e8',
  16 => 'application/pdf',
  17 => '0b53281f19b14c3cbeca01fd39188dd1356663cb',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 17:30:21 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13583///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13583',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406568570,
  7 => 1406568570,
  8 => '16801',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242429,
  15 => '48d96ffc27f08e4f464224c73a7dc9f58fc1a247',
  16 => 'application/pdf',
  17 => '0b53281f19b14c3cbeca01fd39188dd1356663cb',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 17:51:34 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13584///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13584',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406569843,
  7 => 1406569843,
  8 => '18512',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242422,
  15 => 'acf1aff0a51783c6610a1c41fba7175435eaddf7',
  16 => 'application/pdf',
  17 => '1cc8303f11d5872780ee78a8057efce2cdb1b945',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 17:53:34 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13584///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13584',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406569963,
  7 => 1406569963,
  8 => '18512',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242422,
  15 => '3ee9e87876be82a0c57020dc030d5d5bd049febb',
  16 => 'application/pdf',
  17 => '1cc8303f11d5872780ee78a8057efce2cdb1b945',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 17:56:34 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13585///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13585',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406570143,
  7 => 1406570143,
  8 => '16956',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242435,
  15 => '78ad9420c6b603956837d63b133032190eb20874',
  16 => 'application/pdf',
  17 => '49d7f88baa29fdf6d6cadaf408070ed4054a2ce6',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 17:57:51 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13584///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13584',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406570220,
  7 => 1406570220,
  8 => '18512',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242422,
  15 => 'a471c4347474aef6aaf9b48e1e344fe01544bc76',
  16 => 'application/pdf',
  17 => '1cc8303f11d5872780ee78a8057efce2cdb1b945',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 17:58:45 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13585///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13585',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406570274,
  7 => 1406570274,
  8 => '16956',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242435,
  15 => '7b180d130e42c1966391e59635b2fa77cfae5592',
  16 => 'application/pdf',
  17 => '49d7f88baa29fdf6d6cadaf408070ed4054a2ce6',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 18:02:19 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13585///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13585',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406570488,
  7 => 1406570488,
  8 => '16956',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242435,
  15 => '06db5ca570eb574f79ec1c5e0718d20f84273e9b',
  16 => 'application/pdf',
  17 => '49d7f88baa29fdf6d6cadaf408070ed4054a2ce6',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 18:03:11 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13585///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13585',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406570540,
  7 => 1406570540,
  8 => '16956',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242435,
  15 => '7204b17007d93d010820572eee12f410a8f2b639',
  16 => 'application/pdf',
  17 => '49d7f88baa29fdf6d6cadaf408070ed4054a2ce6',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 18:07:41 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13585///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13585',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406570810,
  7 => 1406570810,
  8 => '16956',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242435,
  15 => '8f76657da1e3738eb70a9f10abdbaaf0bee3a150',
  16 => 'application/pdf',
  17 => '49d7f88baa29fdf6d6cadaf408070ed4054a2ce6',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 18:10:30 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13585///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13585',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406570979,
  7 => 1406570979,
  8 => '16956',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242435,
  15 => '97b224a75de3a9b8d58ea314b416e9eac883a98f',
  16 => 'application/pdf',
  17 => '49d7f88baa29fdf6d6cadaf408070ed4054a2ce6',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 18:12:25 UTC] Default exception handler: Can not create file "382/mod_certificate/issue/13586///ES03 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '382',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13586',
  4 => '/',
  5 => 'ES03 Certificate.pdf',
  6 => 1406571094,
  7 => 1406571094,
  8 => '11013',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242452,
  15 => '5c1b1f17ca4b5065c66d76812d2bdebdde156bdf',
  16 => 'application/pdf',
  17 => 'f84f1dbddd62afd978bf509ac5a2294dfa572efc',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 18:13:31 UTC] Default exception handler: Can not create file "382/mod_certificate/issue/13586///ES03 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '382',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13586',
  4 => '/',
  5 => 'ES03 Certificate.pdf',
  6 => 1406571160,
  7 => 1406571160,
  8 => '11013',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242452,
  15 => 'db8cf20ff7362b32bdd5b9e6d47813913ec49afa',
  16 => 'application/pdf',
  17 => 'f84f1dbddd62afd978bf509ac5a2294dfa572efc',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 18:14:23 UTC] Default exception handler: Can not create file "382/mod_certificate/issue/13586///ES03 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '382',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13586',
  4 => '/',
  5 => 'ES03 Certificate.pdf',
  6 => 1406571212,
  7 => 1406571212,
  8 => '11013',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242452,
  15 => '2d538a9dbed53bbdaafe76dfdc56369d1e3ceb32',
  16 => 'application/pdf',
  17 => 'f84f1dbddd62afd978bf509ac5a2294dfa572efc',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 18:15:15 UTC] Default exception handler: Can not create file "382/mod_certificate/issue/13586///ES03 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '382',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13586',
  4 => '/',
  5 => 'ES03 Certificate.pdf',
  6 => 1406571264,
  7 => 1406571264,
  8 => '11013',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242452,
  15 => '49b644e2723b119266cd532ffb6212c83198bb4d',
  16 => 'application/pdf',
  17 => 'f84f1dbddd62afd978bf509ac5a2294dfa572efc',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 18:16:33 UTC] Default exception handler: Can not create file "382/mod_certificate/issue/13586///ES03 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '382',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13586',
  4 => '/',
  5 => 'ES03 Certificate.pdf',
  6 => 1406571342,
  7 => 1406571342,
  8 => '11013',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242452,
  15 => 'ff73ba458e98a23fa8289ea59b2f921c2b046557',
  16 => 'application/pdf',
  17 => 'f84f1dbddd62afd978bf509ac5a2294dfa572efc',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 18:18:18 UTC] Default exception handler: Can not create file "382/mod_certificate/issue/13586///ES03 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '382',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13586',
  4 => '/',
  5 => 'ES03 Certificate.pdf',
  6 => 1406571447,
  7 => 1406571447,
  8 => '11013',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242452,
  15 => '81d1246e8b6d67fc9ed67ef5f2196c1fb440f4ce',
  16 => 'application/pdf',
  17 => 'f84f1dbddd62afd978bf509ac5a2294dfa572efc',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 18:19:32 UTC] Default exception handler: Can not create file "382/mod_certificate/issue/13586///ES03 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '382',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13586',
  4 => '/',
  5 => 'ES03 Certificate.pdf',
  6 => 1406571521,
  7 => 1406571521,
  8 => '11013',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242452,
  15 => '740aab2acc6e5d4cdb651737cd2fd6d4c13e977d',
  16 => 'application/pdf',
  17 => 'f84f1dbddd62afd978bf509ac5a2294dfa572efc',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 18:20:24 UTC] Default exception handler: Can not create file "382/mod_certificate/issue/13586///ES03 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '382',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13586',
  4 => '/',
  5 => 'ES03 Certificate.pdf',
  6 => 1406571573,
  7 => 1406571573,
  8 => '11013',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242452,
  15 => '7151bcc622ffc209b9dfb8d50c79d9c6d8c2d447',
  16 => 'application/pdf',
  17 => 'f84f1dbddd62afd978bf509ac5a2294dfa572efc',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 18:21:17 UTC] Default exception handler: Can not create file "382/mod_certificate/issue/13586///ES03 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '382',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13586',
  4 => '/',
  5 => 'ES03 Certificate.pdf',
  6 => 1406571626,
  7 => 1406571626,
  8 => '11013',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242452,
  15 => '7ed35d2385956405dbaae57599a8a1f761db1f8e',
  16 => 'application/pdf',
  17 => 'f84f1dbddd62afd978bf509ac5a2294dfa572efc',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 18:21:43 UTC] Default exception handler: Can not create file "382/mod_certificate/issue/13586///ES03 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '382',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13586',
  4 => '/',
  5 => 'ES03 Certificate.pdf',
  6 => 1406571652,
  7 => 1406571652,
  8 => '11013',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242452,
  15 => '36d7df3ef0d26bb007ce5cc9ddb9f0e50c2efb96',
  16 => 'application/pdf',
  17 => 'f84f1dbddd62afd978bf509ac5a2294dfa572efc',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 18:27:06 UTC] Default exception handler: Can not create file "382/mod_certificate/issue/13586///ES03 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '382',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13586',
  4 => '/',
  5 => 'ES03 Certificate.pdf',
  6 => 1406571975,
  7 => 1406571975,
  8 => '11013',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242452,
  15 => '504e0f846fe3f392cd263f57624604f7ec7e24e2',
  16 => 'application/pdf',
  17 => 'f84f1dbddd62afd978bf509ac5a2294dfa572efc',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 18:29:14 UTC] Default exception handler: Can not create file "382/mod_certificate/issue/13586///ES03 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '382',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13586',
  4 => '/',
  5 => 'ES03 Certificate.pdf',
  6 => 1406572103,
  7 => 1406572103,
  8 => '11013',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242452,
  15 => '40f7097ce763ec793fff3d995addcc0c5aadcbd7',
  16 => 'application/pdf',
  17 => 'f84f1dbddd62afd978bf509ac5a2294dfa572efc',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:17:56 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13587///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13587',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406578625,
  7 => 1406578625,
  8 => '17923',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => '3707d73c2e0f0da5d40737b2e2861aad01177323',
  16 => 'application/pdf',
  17 => 'e8bfc3957cd3b0306a226089cb8683cc5d4c3955',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:25:09 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13588///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13588',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406579058,
  7 => 1406579058,
  8 => '19650',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => 'a7d04ee40d80aa7216ec1b2a4608902640bccdec',
  16 => 'application/pdf',
  17 => '3a42738f56b91ac795339b4987cd498ed8ddeb01',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:27:06 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13588///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13588',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406579175,
  7 => 1406579175,
  8 => '19650',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => 'c60e01b02db840351f5921066804df0db88ba94e',
  16 => 'application/pdf',
  17 => '3a42738f56b91ac795339b4987cd498ed8ddeb01',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:27:57 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13588///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13588',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406579226,
  7 => 1406579226,
  8 => '19650',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => '63f9463e8fbfcffc0ae0b1fc0c33ea1762a282cb',
  16 => 'application/pdf',
  17 => '3a42738f56b91ac795339b4987cd498ed8ddeb01',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:28:26 UTC] Default exception handler: Can not create file "382/mod_certificate/issue/13589///ES03 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '382',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13589',
  4 => '/',
  5 => 'ES03 Certificate.pdf',
  6 => 1406579255,
  7 => 1406579255,
  8 => '17452',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242451,
  15 => '2749303cb525898010e72f286859a481ecf08d0c',
  16 => 'application/pdf',
  17 => 'a192f1c37c43ea50a03afb53b7a57082023bd041',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:29:14 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13588///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13588',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406579303,
  7 => 1406579303,
  8 => '19650',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => '812593c9d28e316dad14f91eddad3b8311f0ae5d',
  16 => 'application/pdf',
  17 => '3a42738f56b91ac795339b4987cd498ed8ddeb01',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:30:16 UTC] Default exception handler: Can not create file "382/mod_certificate/issue/13589///ES03 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '382',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13589',
  4 => '/',
  5 => 'ES03 Certificate.pdf',
  6 => 1406579365,
  7 => 1406579365,
  8 => '17452',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242451,
  15 => 'c609ee5cc1d78737b398ecd5fba4b32c9a1be662',
  16 => 'application/pdf',
  17 => 'a192f1c37c43ea50a03afb53b7a57082023bd041',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:30:26 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13588///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13588',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406579375,
  7 => 1406579375,
  8 => '19650',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => '17fe111fbfaa973abe081dfa774f557d0e0faedf',
  16 => 'application/pdf',
  17 => '3a42738f56b91ac795339b4987cd498ed8ddeb01',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:31:08 UTC] Default exception handler: Can not create file "382/mod_certificate/issue/13589///ES03 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '382',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13589',
  4 => '/',
  5 => 'ES03 Certificate.pdf',
  6 => 1406579417,
  7 => 1406579417,
  8 => '17452',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242451,
  15 => '316fe1a3a0e96352249118b5c7c641451db298f2',
  16 => 'application/pdf',
  17 => 'a192f1c37c43ea50a03afb53b7a57082023bd041',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:31:17 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13588///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13588',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406579426,
  7 => 1406579426,
  8 => '19650',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => 'c49e394d7e161264869a587ccf6ac71081e30300',
  16 => 'application/pdf',
  17 => '3a42738f56b91ac795339b4987cd498ed8ddeb01',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:32:08 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13588///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13588',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406579477,
  7 => 1406579477,
  8 => '19650',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => 'a6bcc6b7604011af74839f67b042fd60dc6b5ba2',
  16 => 'application/pdf',
  17 => '3a42738f56b91ac795339b4987cd498ed8ddeb01',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:32:08 UTC] Default exception handler: Can not create file "382/mod_certificate/issue/13589///ES03 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '382',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13589',
  4 => '/',
  5 => 'ES03 Certificate.pdf',
  6 => 1406579477,
  7 => 1406579477,
  8 => '17452',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242451,
  15 => 'feec2e51ef23cc9c8c26c1d0d31dd143da38be95',
  16 => 'application/pdf',
  17 => 'a192f1c37c43ea50a03afb53b7a57082023bd041',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:32:59 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13588///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13588',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406579528,
  7 => 1406579528,
  8 => '19650',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => 'c94da3c4c2b9a397d1c41de08406dcbdfa62f3ec',
  16 => 'application/pdf',
  17 => '3a42738f56b91ac795339b4987cd498ed8ddeb01',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:33:00 UTC] Default exception handler: Can not create file "382/mod_certificate/issue/13589///ES03 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '382',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13589',
  4 => '/',
  5 => 'ES03 Certificate.pdf',
  6 => 1406579529,
  7 => 1406579529,
  8 => '17452',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242451,
  15 => '6b802436d67ffbfab32dd205fe35beeb0b7ec04d',
  16 => 'application/pdf',
  17 => 'a192f1c37c43ea50a03afb53b7a57082023bd041',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:35:15 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13588///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13588',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406579664,
  7 => 1406579664,
  8 => '19650',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => '59028b76c82bc8ff4fb9cb3cc3b00278e39d8d48',
  16 => 'application/pdf',
  17 => '3a42738f56b91ac795339b4987cd498ed8ddeb01',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:36:06 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13588///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13588',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406579715,
  7 => 1406579715,
  8 => '19650',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => '8c6daaa5dba7b3e8e57b2977ef39db55835d5cb7',
  16 => 'application/pdf',
  17 => '3a42738f56b91ac795339b4987cd498ed8ddeb01',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:36:57 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13588///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13588',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406579766,
  7 => 1406579766,
  8 => '19650',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => '32edd3d4eec71bc69afa26af89ea9795cf8484d6',
  16 => 'application/pdf',
  17 => '3a42738f56b91ac795339b4987cd498ed8ddeb01',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:37:58 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13588///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13588',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406579827,
  7 => 1406579827,
  8 => '19650',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => 'c3b6d19330e0bebeaf633b38884ac2a52c4c7383',
  16 => 'application/pdf',
  17 => '3a42738f56b91ac795339b4987cd498ed8ddeb01',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:38:49 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13588///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13588',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406579878,
  7 => 1406579878,
  8 => '19650',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => 'bc6fd63b993a63d8f6de81d0f2aa23de90d711cc',
  16 => 'application/pdf',
  17 => '3a42738f56b91ac795339b4987cd498ed8ddeb01',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:39:40 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13588///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13588',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406579929,
  7 => 1406579929,
  8 => '19650',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => '9da8f6843aac3615a4b441c004e931d3df709f42',
  16 => 'application/pdf',
  17 => '3a42738f56b91ac795339b4987cd498ed8ddeb01',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:40:31 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13588///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13588',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406579980,
  7 => 1406579980,
  8 => '19650',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => '9ce663c7bb7e3db139b73a98c73a794e7dd207a1',
  16 => 'application/pdf',
  17 => '3a42738f56b91ac795339b4987cd498ed8ddeb01',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:41:22 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13588///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13588',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406580031,
  7 => 1406580031,
  8 => '19650',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => '528b8dcee2194b3f920a06d83c26f72e731ef365',
  16 => 'application/pdf',
  17 => '3a42738f56b91ac795339b4987cd498ed8ddeb01',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:42:13 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13588///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13588',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406580082,
  7 => 1406580082,
  8 => '19650',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => '93e315b523524368236df9eca5aeb49cace09fa6',
  16 => 'application/pdf',
  17 => '3a42738f56b91ac795339b4987cd498ed8ddeb01',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:42:49 UTC] Can not obtain session lock
[28-Jul-2014 20:42:49 UTC] Default exception handler: Timed out while waiting for session lock.<br />Wait for your current requests to finish and try again later. Debug: 
Error code: sessionwaiterr
* line 1448 of /lib/dml/mysqli_native_moodle_database.php: dml_sessionwait_exception thrown
* line 609 of /lib/sessionlib.php: call to mysqli_native_moodle_database->get_session_lock()
* line ? of unknownfile: call to database_session->handler_read()
* line 190 of /lib/sessionlib.php: call to session_start()
* line 482 of /lib/sessionlib.php: call to session_stub->__construct()
* line 66 of /lib/sessionlib.php: call to database_session->__construct()
* line 703 of /lib/setup.php: call to session_get_instance()
* line 32 of /config.php: call to require_once()
* line 27 of /mod/certificate/view.php: call to require_once()

[28-Jul-2014 20:43:04 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13588///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13588',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406580133,
  7 => 1406580133,
  8 => '19650',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => 'c6e4082b75bb0a683ae15bfa35a130c0bd20bcb9',
  16 => 'application/pdf',
  17 => '3a42738f56b91ac795339b4987cd498ed8ddeb01',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:43:42 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13590///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13590',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406580171,
  7 => 1406580171,
  8 => '12578',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242419,
  15 => 'db772816133edcf37cb46ac6c3138df95b22e35b',
  16 => 'application/pdf',
  17 => 'd17130f88223ca7b8758f3e9ecd1c3f2bdac4e9f',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:43:54 UTC] Can not obtain session lock
[28-Jul-2014 20:43:54 UTC] Default exception handler: Timed out while waiting for session lock.<br />Wait for your current requests to finish and try again later. Debug: 
Error code: sessionwaiterr
* line 1448 of /lib/dml/mysqli_native_moodle_database.php: dml_sessionwait_exception thrown
* line 609 of /lib/sessionlib.php: call to mysqli_native_moodle_database->get_session_lock()
* line ? of unknownfile: call to database_session->handler_read()
* line 190 of /lib/sessionlib.php: call to session_start()
* line 482 of /lib/sessionlib.php: call to session_stub->__construct()
* line 66 of /lib/sessionlib.php: call to database_session->__construct()
* line 703 of /lib/setup.php: call to session_get_instance()
* line 32 of /config.php: call to require_once()
* line 27 of /mod/certificate/view.php: call to require_once()

[28-Jul-2014 20:43:55 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13588///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13588',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406580184,
  7 => 1406580184,
  8 => '19650',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => '791bfe59311c6b59007d79269a6810d3018afca3',
  16 => 'application/pdf',
  17 => '3a42738f56b91ac795339b4987cd498ed8ddeb01',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:44:46 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13588///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13588',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406580235,
  7 => 1406580235,
  8 => '19650',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => '691fcd17bb4bed472330ecb50e38267fee15ae96',
  16 => 'application/pdf',
  17 => '3a42738f56b91ac795339b4987cd498ed8ddeb01',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:47:40 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13590///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13590',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406580409,
  7 => 1406580409,
  8 => '12578',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242419,
  15 => 'cf9cd7577f407deec69e1b583d7754ae7f8121b0',
  16 => 'application/pdf',
  17 => 'd17130f88223ca7b8758f3e9ecd1c3f2bdac4e9f',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:50:13 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13591///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13591',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406580562,
  7 => 1406580562,
  8 => '13521',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242422,
  15 => 'b57e3690939e0c15bbb66593861403e242aae7ee',
  16 => 'application/pdf',
  17 => '937787931c7019101b9a61c2835bca68cfa0737f',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:50:33 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13590///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13590',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406580582,
  7 => 1406580582,
  8 => '12578',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242419,
  15 => '2ddee3a4c264317a27a8247ae0a9e961a5b6f273',
  16 => 'application/pdf',
  17 => 'd17130f88223ca7b8758f3e9ecd1c3f2bdac4e9f',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:57:19 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13587///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13587',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406580988,
  7 => 1406580988,
  8 => '17923',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => '39a6847d7163656f84d593040ae1c3cc5308222a',
  16 => 'application/pdf',
  17 => 'e8bfc3957cd3b0306a226089cb8683cc5d4c3955',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:57:41 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13590///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13590',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406581010,
  7 => 1406581010,
  8 => '12578',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242419,
  15 => '42b5a9a3214267617820a8744e391a1710e0a2c9',
  16 => 'application/pdf',
  17 => 'd17130f88223ca7b8758f3e9ecd1c3f2bdac4e9f',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 20:58:11 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13587///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13587',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406581040,
  7 => 1406581040,
  8 => '17923',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => '78c4ba91a743584a9486385649585c8ea4c6453c',
  16 => 'application/pdf',
  17 => 'e8bfc3957cd3b0306a226089cb8683cc5d4c3955',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 21:00:52 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13587///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13587',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406581201,
  7 => 1406581201,
  8 => '17923',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => 'e1eac73553fe36c39875742dc79c8641f108a22a',
  16 => 'application/pdf',
  17 => 'e8bfc3957cd3b0306a226089cb8683cc5d4c3955',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 21:01:46 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13591///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13591',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406581255,
  7 => 1406581255,
  8 => '13521',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242422,
  15 => 'bd3b507d9826579384f3c97db982900fb55595ba',
  16 => 'application/pdf',
  17 => '937787931c7019101b9a61c2835bca68cfa0737f',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 21:05:05 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13590///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13590',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406581454,
  7 => 1406581454,
  8 => '12578',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242419,
  15 => '2e7540facf64c1599c7773d59f9cefc4cb647c73',
  16 => 'application/pdf',
  17 => 'd17130f88223ca7b8758f3e9ecd1c3f2bdac4e9f',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 21:06:05 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13590///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13590',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406581514,
  7 => 1406581514,
  8 => '12578',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242419,
  15 => '8e17c88ccc4af33c22e09cc2270dbc843ba93529',
  16 => 'application/pdf',
  17 => 'd17130f88223ca7b8758f3e9ecd1c3f2bdac4e9f',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 21:13:00 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13590///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13590',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406581929,
  7 => 1406581929,
  8 => '12578',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242419,
  15 => '987bb3bca503d61ead889e8636ee28bddf3cd2bf',
  16 => 'application/pdf',
  17 => 'd17130f88223ca7b8758f3e9ecd1c3f2bdac4e9f',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 21:13:52 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13591///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13591',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406581981,
  7 => 1406581981,
  8 => '13521',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242422,
  15 => 'fa381d16e5b42b03a03342eeb76ad7a3e0327ff9',
  16 => 'application/pdf',
  17 => '937787931c7019101b9a61c2835bca68cfa0737f',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 21:14:11 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13584///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13584',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406582000,
  7 => 1406582000,
  8 => '18512',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242422,
  15 => 'faacf0ea16fb45c8db5642ce5a448b659f4237de',
  16 => 'application/pdf',
  17 => '1cc8303f11d5872780ee78a8057efce2cdb1b945',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 21:16:52 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13591///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13591',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406582161,
  7 => 1406582161,
  8 => '13521',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242422,
  15 => 'ef99f590e600792e2c4d0807496cff3623d0e6ed',
  16 => 'application/pdf',
  17 => '937787931c7019101b9a61c2835bca68cfa0737f',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 21:17:24 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13584///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13584',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406582193,
  7 => 1406582193,
  8 => '18512',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242422,
  15 => '2397027617d03801a6c366fb30ee6e7b55d46f7c',
  16 => 'application/pdf',
  17 => '1cc8303f11d5872780ee78a8057efce2cdb1b945',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 21:18:25 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13591///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13591',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406582254,
  7 => 1406582254,
  8 => '13521',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242422,
  15 => '348d911cb3fd88b95690c32650d2194aebfc3f1e',
  16 => 'application/pdf',
  17 => '937787931c7019101b9a61c2835bca68cfa0737f',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 21:40:58 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13587///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13587',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406583607,
  7 => 1406583607,
  8 => '17923',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => 'b44a15c7d9385784c6e972d6150ef0d8c0ee882c',
  16 => 'application/pdf',
  17 => 'e8bfc3957cd3b0306a226089cb8683cc5d4c3955',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 21:43:51 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13587///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13587',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406583780,
  7 => 1406583780,
  8 => '17923',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => '58396977a697579b66bc89357bba5d119fbc0da9',
  16 => 'application/pdf',
  17 => 'e8bfc3957cd3b0306a226089cb8683cc5d4c3955',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 21:46:38 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13584///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13584',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406583947,
  7 => 1406583947,
  8 => '18512',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242422,
  15 => 'cb07650d8a7ecba990b90006677613b73734aff1',
  16 => 'application/pdf',
  17 => '1cc8303f11d5872780ee78a8057efce2cdb1b945',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 21:49:17 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13587///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13587',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406584106,
  7 => 1406584106,
  8 => '17923',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => '6fd7c07f433294cdf363275da87ce95ace09ccce',
  16 => 'application/pdf',
  17 => 'e8bfc3957cd3b0306a226089cb8683cc5d4c3955',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 21:50:09 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13587///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13587',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406584158,
  7 => 1406584158,
  8 => '17923',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => 'f7910e46a3f5d5afe06d9eb527a4f24e2d6b6dbd',
  16 => 'application/pdf',
  17 => 'e8bfc3957cd3b0306a226089cb8683cc5d4c3955',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 21:52:09 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13587///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13587',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406584277,
  7 => 1406584277,
  8 => '17923',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => '6ac50bfef75c2b52f689bed1dada4f93fee70861',
  16 => 'application/pdf',
  17 => 'e8bfc3957cd3b0306a226089cb8683cc5d4c3955',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 21:54:47 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13587///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13587',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406584436,
  7 => 1406584436,
  8 => '17923',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => 'd63b6d58cb105ff1709e752884507ecd60bb49bc',
  16 => 'application/pdf',
  17 => 'e8bfc3957cd3b0306a226089cb8683cc5d4c3955',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 21:55:39 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13587///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13587',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406584488,
  7 => 1406584488,
  8 => '17923',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242427,
  15 => 'cf85be86079000df7bdf278e478b11d1c7115aff',
  16 => 'application/pdf',
  17 => 'e8bfc3957cd3b0306a226089cb8683cc5d4c3955',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 22:12:24 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13592///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13592',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406585493,
  7 => 1406585493,
  8 => '19433',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242424,
  15 => '2a19883ddfa09e617da33fd732dd1ed2a92519c5',
  16 => 'application/pdf',
  17 => '3bc117fa90090e44ee9ab4c54a2d8611a9eb484f',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 22:13:57 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13592///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13592',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406585586,
  7 => 1406585586,
  8 => '19433',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242424,
  15 => '7260e36cbefe095f0cc83904230495707875e0e8',
  16 => 'application/pdf',
  17 => '3bc117fa90090e44ee9ab4c54a2d8611a9eb484f',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 22:15:33 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13592///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13592',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406585682,
  7 => 1406585682,
  8 => '19433',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242424,
  15 => '1413f08c5ea067dae0852b23a80b487f3d4e086d',
  16 => 'application/pdf',
  17 => '3bc117fa90090e44ee9ab4c54a2d8611a9eb484f',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 22:17:47 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13592///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13592',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406585816,
  7 => 1406585816,
  8 => '19433',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242424,
  15 => 'aeaa2b1c59593f5ed77e11c162294a5faad3832a',
  16 => 'application/pdf',
  17 => '3bc117fa90090e44ee9ab4c54a2d8611a9eb484f',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 22:33:15 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13592///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13592',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406586744,
  7 => 1406586744,
  8 => '19433',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242424,
  15 => '39400a278b1d1c856c62ede0090ecef7572e62df',
  16 => 'application/pdf',
  17 => '3bc117fa90090e44ee9ab4c54a2d8611a9eb484f',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 23:30:06 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13593///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13593',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406590155,
  7 => 1406590155,
  8 => '18704',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242424,
  15 => 'aab33b3165ad5030edf8509733735c0217daaddd',
  16 => 'application/pdf',
  17 => '6bc5b6a29c233532950c878e26bb834664f970d0',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 23:31:27 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13593///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13593',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406590236,
  7 => 1406590236,
  8 => '18704',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242424,
  15 => '467c39684a58b1fc8392ce5ac5c430006dfe358a',
  16 => 'application/pdf',
  17 => '6bc5b6a29c233532950c878e26bb834664f970d0',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 23:32:29 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13593///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13593',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406590298,
  7 => 1406590298,
  8 => '18704',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242424,
  15 => 'c036598442581c4283f6c8ef744d4aff3cbd2127',
  16 => 'application/pdf',
  17 => '6bc5b6a29c233532950c878e26bb834664f970d0',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 23:52:06 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13594///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13594',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406591475,
  7 => 1406591475,
  8 => '19612',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242428,
  15 => '666b1dc8fa425e5e9c2c196e7d292263b01eb522',
  16 => 'application/pdf',
  17 => '1fbea71baf07e94adccb10f1778ec99972c7c4df',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 23:53:30 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13593///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13593',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406591559,
  7 => 1406591559,
  8 => '18704',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242424,
  15 => 'fd804a16c53badbe80f2cfcf16f19bc4e8a0466a',
  16 => 'application/pdf',
  17 => '6bc5b6a29c233532950c878e26bb834664f970d0',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 23:53:31 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13594///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13594',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406591560,
  7 => 1406591560,
  8 => '19612',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242428,
  15 => '53cfd6402b385b44cca015794cf11132bb2335ad',
  16 => 'application/pdf',
  17 => '1fbea71baf07e94adccb10f1778ec99972c7c4df',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[28-Jul-2014 23:55:02 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13594///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13594',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406591651,
  7 => 1406591651,
  8 => '19612',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242428,
  15 => '806747d7c2c7141fce52218c6b1ee112aadcf9e5',
  16 => 'application/pdf',
  17 => '1fbea71baf07e94adccb10f1778ec99972c7c4df',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[29-Jul-2014 00:57:42 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13592///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13592',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406595411,
  7 => 1406595411,
  8 => '19433',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242424,
  15 => 'd61af653e966cd7b2240a75752043c8ed1e49c4d',
  16 => 'application/pdf',
  17 => '3bc117fa90090e44ee9ab4c54a2d8611a9eb484f',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[29-Jul-2014 01:05:07 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13593///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13593',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406595856,
  7 => 1406595856,
  8 => '18704',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242424,
  15 => 'ddf39f85b3e846f29ba75fa0c032eafd470f9762',
  16 => 'application/pdf',
  17 => '6bc5b6a29c233532950c878e26bb834664f970d0',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[29-Jul-2014 01:23:15 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13592///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13592',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406596944,
  7 => 1406596944,
  8 => '19433',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242424,
  15 => '90e9befe01bac8a14561f4e2b348a01747bc0595',
  16 => 'application/pdf',
  17 => '3bc117fa90090e44ee9ab4c54a2d8611a9eb484f',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[29-Jul-2014 01:31:09 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13594///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13594',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406597418,
  7 => 1406597418,
  8 => '19612',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242428,
  15 => 'dadcac082fb3e56a9a4704e56f4097f24d19cdc9',
  16 => 'application/pdf',
  17 => '1fbea71baf07e94adccb10f1778ec99972c7c4df',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[29-Jul-2014 01:45:34 UTC] Default exception handler: Can not create file "175/mod_certificate/issue/13594///ES01 Certificate.pdf" Debug: Lock wait timeout exceeded; try restarting transaction
INSERT INTO mdl_files (contextid,component,filearea,itemid,filepath,filename,timecreated,timemodified,userid,source,author,license,status,sortorder,filesize,contenthash,mimetype,pathnamehash) VALUES(?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?,?)
[array (
  0 => '175',
  1 => 'mod_certificate',
  2 => 'issue',
  3 => '13594',
  4 => '/',
  5 => 'ES01 Certificate.pdf',
  6 => 1406598283,
  7 => 1406598283,
  8 => '19612',
  9 => NULL,
  10 => NULL,
  11 => NULL,
  12 => 0,
  13 => 0,
  14 => 242428,
  15 => '0725b2d55357fc78167ab51ab9ea083830ca35c5',
  16 => 'application/pdf',
  17 => '1fbea71baf07e94adccb10f1778ec99972c7c4df',
)]
Error code: storedfilenotcreated
* line 1181 of /lib/filestorage/file_storage.php: stored_file_creation_exception thrown
* line 590 of /mod/certificate/lib.php: call to file_storage->create_file_from_string()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[29-Jul-2014 01:51:05 UTC] Database transaction aborted automatically in /home/moodlebf/public_html/mod/certificate/view.php
[29-Jul-2014 01:51:05 UTC] Default exception handler: Error writing to database Debug: Lock wait timeout exceeded; try restarting transaction
DELETE FROM mdl_files WHERE id = ?
[array (
  0 => '83412',
)]
Error code: dmlwriteexception
* line 429 of /lib/dml/moodle_database.php: dml_write_exception thrown
* line 1310 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end()
* line 1696 of /lib/dml/moodle_database.php: call to mysqli_native_moodle_database->delete_records_select()
* line 293 of /lib/filestorage/stored_file.php: call to moodle_database->delete_records()
* line 623 of /lib/filestorage/file_storage.php: call to stored_file->delete()
* line 587 of /mod/certificate/lib.php: call to file_storage->delete_area_files()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[29-Jul-2014 02:23:28 UTC] Database transaction aborted automatically in /home/moodlebf/public_html/mod/certificate/view.php
[29-Jul-2014 02:23:28 UTC] Default exception handler: Error writing to database Debug: Lock wait timeout exceeded; try restarting transaction
DELETE FROM mdl_files WHERE id = ?
[array (
  0 => '91086',
)]
Error code: dmlwriteexception
* line 429 of /lib/dml/moodle_database.php: dml_write_exception thrown
* line 1310 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end()
* line 1696 of /lib/dml/moodle_database.php: call to mysqli_native_moodle_database->delete_records_select()
* line 293 of /lib/filestorage/stored_file.php: call to moodle_database->delete_records()
* line 623 of /lib/filestorage/file_storage.php: call to stored_file->delete()
* line 587 of /mod/certificate/lib.php: call to file_storage->delete_area_files()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[29-Jul-2014 02:24:53 UTC] Database transaction aborted automatically in /home/moodlebf/public_html/mod/certificate/view.php
[29-Jul-2014 02:24:53 UTC] Default exception handler: Error writing to database Debug: Lock wait timeout exceeded; try restarting transaction
DELETE FROM mdl_files WHERE id = ?
[array (
  0 => '91086',
)]
Error code: dmlwriteexception
* line 429 of /lib/dml/moodle_database.php: dml_write_exception thrown
* line 1310 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end()
* line 1696 of /lib/dml/moodle_database.php: call to mysqli_native_moodle_database->delete_records_select()
* line 293 of /lib/filestorage/stored_file.php: call to moodle_database->delete_records()
* line 623 of /lib/filestorage/file_storage.php: call to stored_file->delete()
* line 587 of /mod/certificate/lib.php: call to file_storage->delete_area_files()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[29-Jul-2014 02:29:15 UTC] Database transaction aborted automatically in /home/moodlebf/public_html/mod/certificate/view.php
[29-Jul-2014 02:29:15 UTC] Default exception handler: Error writing to database Debug: Lock wait timeout exceeded; try restarting transaction
DELETE FROM mdl_files WHERE id = ?
[array (
  0 => '91086',
)]
Error code: dmlwriteexception
* line 429 of /lib/dml/moodle_database.php: dml_write_exception thrown
* line 1310 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end()
* line 1696 of /lib/dml/moodle_database.php: call to mysqli_native_moodle_database->delete_records_select()
* line 293 of /lib/filestorage/stored_file.php: call to moodle_database->delete_records()
* line 623 of /lib/filestorage/file_storage.php: call to stored_file->delete()
* line 587 of /mod/certificate/lib.php: call to file_storage->delete_area_files()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[29-Jul-2014 02:30:37 UTC] Database transaction aborted automatically in /home/moodlebf/public_html/mod/certificate/view.php
[29-Jul-2014 02:30:37 UTC] Default exception handler: Error writing to database Debug: Lock wait timeout exceeded; try restarting transaction
DELETE FROM mdl_files WHERE id = ?
[array (
  0 => '91086',
)]
Error code: dmlwriteexception
* line 429 of /lib/dml/moodle_database.php: dml_write_exception thrown
* line 1310 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end()
* line 1696 of /lib/dml/moodle_database.php: call to mysqli_native_moodle_database->delete_records_select()
* line 293 of /lib/filestorage/stored_file.php: call to moodle_database->delete_records()
* line 623 of /lib/filestorage/file_storage.php: call to stored_file->delete()
* line 587 of /mod/certificate/lib.php: call to file_storage->delete_area_files()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[29-Jul-2014 02:32:03 UTC] Database transaction aborted automatically in /home/moodlebf/public_html/mod/certificate/view.php
[29-Jul-2014 02:32:03 UTC] Default exception handler: Error writing to database Debug: Lock wait timeout exceeded; try restarting transaction
DELETE FROM mdl_files WHERE id = ?
[array (
  0 => '95200',
)]
Error code: dmlwriteexception
* line 429 of /lib/dml/moodle_database.php: dml_write_exception thrown
* line 1310 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end()
* line 1696 of /lib/dml/moodle_database.php: call to mysqli_native_moodle_database->delete_records_select()
* line 293 of /lib/filestorage/stored_file.php: call to moodle_database->delete_records()
* line 623 of /lib/filestorage/file_storage.php: call to stored_file->delete()
* line 587 of /mod/certificate/lib.php: call to file_storage->delete_area_files()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[29-Jul-2014 04:13:37 UTC] Database transaction aborted automatically in /home/moodlebf/public_html/mod/certificate/view.php
[29-Jul-2014 04:13:37 UTC] Default exception handler: Error writing to database Debug: Lock wait timeout exceeded; try restarting transaction
DELETE FROM mdl_files WHERE id = ?
[array (
  0 => '91086',
)]
Error code: dmlwriteexception
* line 429 of /lib/dml/moodle_database.php: dml_write_exception thrown
* line 1310 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end()
* line 1696 of /lib/dml/moodle_database.php: call to mysqli_native_moodle_database->delete_records_select()
* line 293 of /lib/filestorage/stored_file.php: call to moodle_database->delete_records()
* line 623 of /lib/filestorage/file_storage.php: call to stored_file->delete()
* line 587 of /mod/certificate/lib.php: call to file_storage->delete_area_files()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[29-Jul-2014 04:15:04 UTC] Database transaction aborted automatically in /home/moodlebf/public_html/mod/certificate/view.php
[29-Jul-2014 04:15:04 UTC] Default exception handler: Error writing to database Debug: Lock wait timeout exceeded; try restarting transaction
DELETE FROM mdl_files WHERE id = ?
[array (
  0 => '91086',
)]
Error code: dmlwriteexception
* line 429 of /lib/dml/moodle_database.php: dml_write_exception thrown
* line 1310 of /lib/dml/mysqli_native_moodle_database.php: call to moodle_database->query_end()
* line 1696 of /lib/dml/moodle_database.php: call to mysqli_native_moodle_database->delete_records_select()
* line 293 of /lib/filestorage/stored_file.php: call to moodle_database->delete_records()
* line 623 of /lib/filestorage/file_storage.php: call to stored_file->delete()
* line 587 of /mod/certificate/lib.php: call to file_storage->delete_area_files()
* line 143 of /mod/certificate/view.php: call to certificate_save_pdf()

[12-Aug-2014 11:41:49 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 30 of /mod/certificate/index.php: call to required_param()

[24-Aug-2014 05:47:23 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 30 of /mod/certificate/index.php: call to required_param()

[15-Sep-2014 04:15:10 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[21-Sep-2014 05:06:16 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 30 of /mod/certificate/index.php: call to required_param()

[21-Sep-2014 21:28:31 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 30 of /mod/certificate/index.php: call to required_param()

[06-Oct-2014 04:50:15 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[06-Oct-2014 04:50:59 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[06-Oct-2014 04:51:02 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[06-Oct-2014 04:53:53 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[06-Oct-2014 12:40:50 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[15-Oct-2014 12:02:20 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 32 of /mod/certificate/view.php: call to required_param()

[19-Oct-2014 12:26:03 UTC] Default exception handler: A required parameter (id) was missing Debug: 
Error code: missingparam
* line 476 of /lib/setuplib.php: moodle_exception thrown
* line 527 of /lib/moodlelib.php: call to print_error()
* line 30 of /mod/certificate/index.php: call to required_param()

