Fatal error: Uncaught Error: Interface "BookStack\Activity\Notifications\Handlers\NotificationHandler" not found in /home/bimmertest/BookStack/app/Activity/Notifications/Handlers/BaseNotificationHandler.php:11 Stack trace: #0 {main} thrown in /home/bimmertest/BookStack/app/Activity/Notifications/Handlers/BaseNotificationHandler.php on line 11