Fatal error: Uncaught Error: Class "advanced_testcase" not found in C:\xampp\htdocs\laberit01\html\moodle\question\bank\managecategories\tests\helper_test.php:31 Stack trace: #0 {main} thrown in C:\xampp\htdocs\laberit01\html\moodle\question\bank\managecategories\tests\helper_test.php on line 31