Fatal error: Uncaught Error: Class 'Symfony\Component\HttpKernel\Event\KernelEvent' not found in /var/www/development/pixtask/vendor/symfony/http-kernel/Event/FinishRequestEvent.php:19 Stack trace: #0 {main} thrown in /var/www/development/pixtask/vendor/symfony/http-kernel/Event/FinishRequestEvent.php on line 19