Fatal error: Uncaught Error: Interface "ilFileDataForumInterface" not found in /var/www/html/ilias/components/ILIAS/Forum/classes/Files/class.ilFileDataForumRCImplementation.php:25 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/Forum/classes/Files/class.ilFileDataForumRCImplementation.php on line 25