Fatal error: Uncaught Error: Class 'Symfony\Component\Console\Event\ConsoleEvent' not found in /home/app/htdocs/ninja/vendor/symfony/console/Event/ConsoleTerminateEvent.php:23 Stack trace: #0 {main} thrown in /home/app/htdocs/ninja/vendor/symfony/console/Event/ConsoleTerminateEvent.php on line 23