Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\Exception\NotFoundHttpException' not found in /home/lafaamicps/www/symfony/vendor/sonata-project/block-bundle/Exception/BlockNotFoundException.php:15 Stack trace: #0 {main} thrown in /home/lafaamicps/www/symfony/vendor/sonata-project/block-bundle/Exception/BlockNotFoundException.php on line 15