Fatal error: Uncaught Error: Class "Symfony\Component\DependencyInjection\Extension\Extension" not found in /var/www/public/git/vendor/phpro/grumphp/src/Configuration/GrumPHPExtension.php:12 Stack trace: #0 {main} thrown in /var/www/public/git/vendor/phpro/grumphp/src/Configuration/GrumPHPExtension.php on line 12