Fatal error: Uncaught Error: Class "Symfony\Component\Console\Event\ConsoleEvent" not found in /home/kartulirest/public_html/xyz.kartulirest.de/vendor/symfony/console/Event/ConsoleErrorEvent.php:23 Stack trace: #0 {main} thrown in /home/kartulirest/public_html/xyz.kartulirest.de/vendor/symfony/console/Event/ConsoleErrorEvent.php on line 23