Fatal error: Uncaught Error: Class "ilObjectAccess" not found in /var/www/html/ilias/components/ILIAS/Chatroom/classes/class.ilObjChatroomAdminAccess.php:28 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/Chatroom/classes/class.ilObjChatroomAdminAccess.php on line 28