Fatal error: Uncaught Error: Class "Concrete\Core\Entity\Notification\Notification" not found in /home/vincent/http/concrete5/concrete/src/Entity/Notification/NewFormSubmissionNotification.php:15 Stack trace: #0 {main} thrown in /home/vincent/http/concrete5/concrete/src/Entity/Notification/NewFormSubmissionNotification.php on line 15