Fatal error: Uncaught Error: Interface "NotificationCenter\Gateway\GatewayInterface" not found in /home/rankting/public_html/ALT/ranketing.de (contao)/vendor/terminal42/notification_center/library/NotificationCenter/Gateway/Queue.php:17 Stack trace: #0 {main} thrown in /home/rankting/public_html/ALT/ranketing.de (contao)/vendor/terminal42/notification_center/library/NotificationCenter/Gateway/Queue.php on line 17