Fatal error: Uncaught Error: Interface "ilPluginStateDB" not found in /var/www/html/ilias/components/ILIAS/Component/classes/class.ilNullPluginStateDB.php:27 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/Component/classes/class.ilNullPluginStateDB.php on line 27