Fatal error: Uncaught Error: Class "advanced_testcase" not found in /home/revenuem/moodle.orbitassociation.com/admin/tool/dataprivacy/tests/user_deleted_observer_test.php:28 Stack trace: #0 {main} thrown in /home/revenuem/moodle.orbitassociation.com/admin/tool/dataprivacy/tests/user_deleted_observer_test.php on line 28