Fatal error: Uncaught Error: Class "ilTable2GUI" not found in /var/www/html/ilias/components/ILIAS/Test/classes/Tables/class.ilResultsByQuestionTableGUI.php:31 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/Test/classes/Tables/class.ilResultsByQuestionTableGUI.php on line 31