Fatal error: Uncaught Error: Class 'Symfony\Component\Console\Helper\DialogHelper' not found in /home/synap/fr/synap/dev/www/7/vendor/sensio/generator-bundle/Sensio/Bundle/GeneratorBundle/Command/Helper/DialogHelper.php:22 Stack trace: #0 {main} thrown in /home/synap/fr/synap/dev/www/7/vendor/sensio/generator-bundle/Sensio/Bundle/GeneratorBundle/Command/Helper/DialogHelper.php on line 22