Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\DependencyInjection\Extension' not found in C:\Apache24\htdocs\cwbts\vendor\sensio\framework-extra-bundle\src\DependencyInjection\SensioFrameworkExtraExtension.php:27 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\cwbts\vendor\sensio\framework-extra-bundle\src\DependencyInjection\SensioFrameworkExtraExtension.php on line 27