Fatal error: Uncaught Error: Class 'Sonata\MediaBundle\Listener\BaseMediaEventSubscriber' not found in /home/lafaamicps/www/symfony/vendor/sonata-project/media-bundle/Listener/ORM/MediaEventSubscriber.php:19 Stack trace: #0 {main} thrown in /home/lafaamicps/www/symfony/vendor/sonata-project/media-bundle/Listener/ORM/MediaEventSubscriber.php on line 19