Fatal error: Uncaught Error: Interface "ILIAS\TestQuestionPool\Questions\Question" not found in /var/www/html/ilias/components/ILIAS/TestQuestionPool/classes/class.assQuestion.php:50 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/TestQuestionPool/classes/class.assQuestion.php on line 50