Fatal error: Uncaught Error: Class 'Symfony\Contracts\EventDispatcher\Event' not found in D:\workspaces\liZiPingBack\vendor\lexik\jwt-authentication-bundle\Event\JWTCreatedEvent.php:11 Stack trace: #0 {main} thrown in D:\workspaces\liZiPingBack\vendor\lexik\jwt-authentication-bundle\Event\JWTCreatedEvent.php on line 11