Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\Event\PostResponseEvent' not found in C:\Apache24\htdocs\new-tw\vendor\symfony\http-kernel\Event\TerminateEvent.php:24 Stack trace: #0 {main} thrown in C:\Apache24\htdocs\new-tw\vendor\symfony\http-kernel\Event\TerminateEvent.php on line 24