Fatal error: Uncaught Error: Interface "ilDBManager" not found in /var/www/html/ilias/components/ILIAS/Database/classes/PDO/Manager/class.ilDBPdoManager.php:25 Stack trace: #0 {main} thrown in /var/www/html/ilias/components/ILIAS/Database/classes/PDO/Manager/class.ilDBPdoManager.php on line 25