Fatal error: Uncaught Error: Class "advanced_testcase" not found in C:\Apache24\htdocs\moodle\admin\tool\dataprivacy\tests\user_deleted_observer_test.php:28 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\moodle\admin\tool\dataprivacy\tests\user_deleted_observer_test.php on line 28