Fatal error: Uncaught Error: Class "Symfony\Contracts\EventDispatcher\Event" not found in /var/www/dev1/data/www/dev1.crosshub.ru/organizer/vendor/symfony/event-dispatcher/GenericEvent.php:26 Stack trace: #0 {main} thrown in /var/www/dev1/data/www/dev1.crosshub.ru/organizer/vendor/symfony/event-dispatcher/GenericEvent.php on line 26