Fatal error: Uncaught Error: Interface 'Sonata\AdminBundle\Security\Handler\SecurityHandlerInterface' not found in /home/lafaamicps/www/symfony/vendor/sonata-project/admin-bundle/Security/Handler/RoleSecurityHandler.php:25 Stack trace: #0 {main} thrown in /home/lafaamicps/www/symfony/vendor/sonata-project/admin-bundle/Security/Handler/RoleSecurityHandler.php on line 25