Fatal error: Uncaught Error: Class "ILIAS\Object\Properties\ObjectTypeSpecificProperties\AbstractObjectTypeSpecificProperties" not found in /var/www/html/ilias/components/ILIAS/File/classes/ObjectProperties/FileObjectProperties.php:24 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/File/classes/ObjectProperties/FileObjectProperties.php on line 24