Fatal error: Uncaught Error: Class "Symfony\Component\Console\Helper\Helper" not found in /opt/lampp/htdocs/forum/flarum/vendor/doctrine/dbal/lib/Doctrine/DBAL/Tools/Console/Helper/ConnectionHelper.php:13 Stack trace: #0 {main} thrown in /opt/lampp/htdocs/forum/flarum/vendor/doctrine/dbal/lib/Doctrine/DBAL/Tools/Console/Helper/ConnectionHelper.php on line 13