Fatal error: Uncaught Error: Class 'FOS\UserBundle\Entity\Group' not found in /home/lafaamicps/www/symfony/vendor/sonata-project/user-bundle/Entity/BaseGroup.php:18 Stack trace: #0 {main} thrown in /home/lafaamicps/www/symfony/vendor/sonata-project/user-bundle/Entity/BaseGroup.php on line 18