Fatal error: Uncaught Error: Class "ilBuddySystemBaseTestCase" not found in /var/www/html/ilias/components/ILIAS/Contact/tests/states/ilBuddySystemRelationStateNullFilterRuleTestCase.php:21 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/Contact/tests/states/ilBuddySystemRelationStateNullFilterRuleTestCase.php on line 21