Fatal error: Uncaught Error: Class "backup_qbank_plugin" not found in C:\Apache24\htdocs\moodle\question\bank\customfields\backup\moodle2\backup_qbank_customfields_plugin.class.php:25 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\moodle\question\bank\customfields\backup\moodle2\backup_qbank_customfields_plugin.class.php on line 25