Fatal error: Uncaught Error: Class "Symfony\Contracts\EventDispatcher\Event" not found in /var/www/dev3/data/www/dev3.crosshub.ru/proforientation/vendor/symfony/http-kernel/Event/KernelEvent.php:23 Stack trace: #0 {main} thrown in /var/www/dev3/data/www/dev3.crosshub.ru/proforientation/vendor/symfony/http-kernel/Event/KernelEvent.php on line 23