Fatal error: Uncaught Error: Class "core_customfield\handler" not found in C:\Apache24\htdocs\moodle\question\bank\customfields\classes\customfield\question_handler.php:31 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\moodle\question\bank\customfields\classes\customfield\question_handler.php on line 31