Fatal error: Uncaught Error: Class 'Symfony\Component\Security\Core\Authorization\ExpressionLanguage' not found in /home/lafaamicps/www/symfony/vendor/sensio/framework-extra-bundle/Sensio/Bundle/FrameworkExtraBundle/Security/ExpressionLanguage.php:21 Stack trace: #0 {main} thrown in /home/lafaamicps/www/symfony/vendor/sensio/framework-extra-bundle/Sensio/Bundle/FrameworkExtraBundle/Security/ExpressionLanguage.php on line 21