Fatal error: Uncaught Error: Class 'Sonata\BlockBundle\Model\Block' not found in /home/lafaamicps/www/symfony/vendor/sonata-project/block-bundle/Model/EmptyBlock.php:18 Stack trace: #0 {main} thrown in /home/lafaamicps/www/symfony/vendor/sonata-project/block-bundle/Model/EmptyBlock.php on line 18