Fatal error: Uncaught Error: Class 'Symfony\Component\EventDispatcher\Event' not found in /www/wwwroot/0.vhai.com/1.vhai.com/feijin_shop/source/vendor/symfony/event-dispatcher/GenericEvent.php:21 Stack trace: #0 {main} thrown in /www/wwwroot/0.vhai.com/1.vhai.com/feijin_shop/source/vendor/symfony/event-dispatcher/GenericEvent.php on line 21