Fatal error: Uncaught Error: Class "ilTable2GUI" not found in /var/www/html/ilias/components/ILIAS/Survey/classes/tables/class.ilSumScoreTableGUI.php:23 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/Survey/classes/tables/class.ilSumScoreTableGUI.php on line 23