Fatal error: Uncaught Error: Class 'Symfony\Contracts\EventDispatcher\Event' not found in /home/huionetr/public_html/vendor/symfony/http-kernel/Event/KernelEvent.php:23 Stack trace: #0 {main} thrown in /home/huionetr/public_html/vendor/symfony/http-kernel/Event/KernelEvent.php on line 23