Fatal error: Uncaught Error: Class "ILIAS\GlobalScreen\Scope\MainMenu\Provider\AbstractStaticMainMenuProvider" not found in /var/www/html/ilias/components/ILIAS/Chatroom/classes/Provider/ChatMainBarProvider.php:36 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/Chatroom/classes/Provider/ChatMainBarProvider.php on line 36