Fatal error: Uncaught Error: Class "advanced_testcase" not found in C:\Apache24\htdocs\moodle\backup\moodle2\tests\backup_stepslib_test.php:26 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\moodle\backup\moodle2\tests\backup_stepslib_test.php on line 26