Fatal error: Uncaught Error: Class 'Symfony\Component\Security\Core\Event\AuthenticationEvent' not found in D:\workspaces\liZiPingBack\vendor\symfony\security-core\Event\AuthenticationSuccessEvent.php:17 Stack trace: #0 {main} thrown in D:\workspaces\liZiPingBack\vendor\symfony\security-core\Event\AuthenticationSuccessEvent.php on line 17