Fatal error: Uncaught Error: Class 'Symfony\Bundle\FrameworkBundle\Command\ContainerAwareCommand' not found in /home/lafaamicps/www/symfony/vendor/sonata-project/notification-bundle/Command/ListQueuesCommand.php:21 Stack trace: #0 {main} thrown in /home/lafaamicps/www/symfony/vendor/sonata-project/notification-bundle/Command/ListQueuesCommand.php on line 21