Fatal error: Uncaught Error: Class "ilPropertyFormGUI" not found in /var/www/html/ilias/components/ILIAS/TestQuestionPool/classes/forms/class.ilAssQuestionAuthoringFormGUI.php:25 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/TestQuestionPool/classes/forms/class.ilAssQuestionAuthoringFormGUI.php on line 25