Fatal error: Uncaught Error: Class "Symfony\Component\EventDispatcher\Event" not found in C:\xampp\htdocs\Sistemas_gerais\code-ticket-responsivo\vendor\symfony\event-dispatcher\GenericEvent.php:21 Stack trace: #0 {main} thrown in C:\xampp\htdocs\Sistemas_gerais\code-ticket-responsivo\vendor\symfony\event-dispatcher\GenericEvent.php on line 21