Fatal error: Uncaught Error: Class "advanced_testcase" not found in C:\xampp\htdocs\moodle\question\bank\comment\tests\event\comment_created_deleted_test.php:36 Stack trace: #0 {main} thrown in C:\xampp\htdocs\moodle\question\bank\comment\tests\event\comment_created_deleted_test.php on line 36