Fatal error: Uncaught Error: Class "advanced_testcase" not found in /srv/www/htdocs/moodle/lib/tests/content/export/exportable_items/exportable_stored_file_test.php:37 Stack trace: #0 {main} thrown in /srv/www/htdocs/moodle/lib/tests/content/export/exportable_items/exportable_stored_file_test.php on line 37