Fatal error: Uncaught Error: Class 'Symfony\Component\Security\Acl\Voter\AclVoter' not found in /home/lafaamicps/www/symfony/vendor/sonata-project/user-bundle/Security/Authorization/Voter/UserAclVoter.php:20 Stack trace: #0 {main} thrown in /home/lafaamicps/www/symfony/vendor/sonata-project/user-bundle/Security/Authorization/Voter/UserAclVoter.php on line 20