Fatal error: Uncaught Error: Class "Symfony\Contracts\EventDispatcher\Event" not found in /home/u336811718/domains/training.sothik.com/public_html/vendor/symfony/event-dispatcher/GenericEvent.php:26 Stack trace: #0 {main} thrown in /home/u336811718/domains/training.sothik.com/public_html/vendor/symfony/event-dispatcher/GenericEvent.php on line 26