Fatal error: Uncaught Error: Class "Symfony\Component\Console\Event\ConsoleEvent" not found in /srv/www/sites/public/starter-projects/vendor/symfony/console/Event/ConsoleSignalEvent.php:21 Stack trace: #0 {main} thrown in /srv/www/sites/public/starter-projects/vendor/symfony/console/Event/ConsoleSignalEvent.php on line 21