Fatal error: Uncaught Error: Class 'Symfony\Component\Security\Core\Authorization\ExpressionLanguage' not found in C:\Apache24\htdocs\cwbts\vendor\sensio\framework-extra-bundle\src\Security\ExpressionLanguage.php:21 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cwbts\vendor\sensio\framework-extra-bundle\src\Security\ExpressionLanguage.php on line 21