Fatal error: Uncaught Error: Interface "ILIAS\Test\Questions\Properties\Property" not found in /var/www/html/ilias/components/ILIAS/Test/src/Questions/Properties/PropertySequence.php:23 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/Test/src/Questions/Properties/PropertySequence.php on line 23