Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\Event\FilterControllerEvent' not found in D:\workspaces\liZiPingBack\vendor\symfony\http-kernel\Event\ControllerEvent.php:27 Stack trace: #0 {main} thrown in D:\workspaces\liZiPingBack\vendor\symfony\http-kernel\Event\ControllerEvent.php on line 27