Fatal error: Uncaught Error: Class "Symfony\Component\Console\Helper\Helper" not found in /home/vincent/http/concrete5/concrete/vendor/doctrine/migrations/lib/Doctrine/DBAL/Migrations/Tools/Console/Helper/ConfigurationHelper.php:37 Stack trace: #0 {main} thrown in /home/vincent/http/concrete5/concrete/vendor/doctrine/migrations/lib/Doctrine/DBAL/Migrations/Tools/Console/Helper/ConfigurationHelper.php on line 37