Fatal error: Uncaught Error: Class "Symfony\Contracts\EventDispatcher\Event" not found in /home/commyho2/public_html/drupal11.com1.myhost.id/d11d5/vendor/symfony/http-kernel/Event/KernelEvent.php:23 Stack trace: #0 {main} thrown in /home/commyho2/public_html/drupal11.com1.myhost.id/d11d5/vendor/symfony/http-kernel/Event/KernelEvent.php on line 23