Fatal error: Uncaught Error: Interface 'Sonata\NotificationBundle\Model\MessageInterface' not found in /home/lafaamicps/www/symfony/vendor/sonata-project/notification-bundle/Model/Message.php:14 Stack trace: #0 {main} thrown in /home/lafaamicps/www/symfony/vendor/sonata-project/notification-bundle/Model/Message.php on line 14