Fatal error: Uncaught Error: Interface "ilDatabaseUpdateSteps" not found in /var/www/html/ilias/components/ILIAS/UICore/classes/Setup/Database/class.ilCtrlDatabaseUpdateSteps.php:13 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/UICore/classes/Setup/Database/class.ilCtrlDatabaseUpdateSteps.php on line 13