Fatal error: Uncaught Error: Interface "ILIAS\Setup\Objective" not found in /var/www/html/ilias/components/ILIAS/Chatroom/classes/Setup/class.ilChatroomServerConfigStoredObjective.php:24 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/Chatroom/classes/Setup/class.ilChatroomServerConfigStoredObjective.php on line 24