Fatal error: Uncaught Error: Class "Symfony\Component\Console\Helper\Helper" not found in /home/alterna/private_assets.alternalab.it/vendor/symfony/console/Helper/DebugFormatterHelper.php:21 Stack trace: #0 {main} thrown in /home/alterna/private_assets.alternalab.it/vendor/symfony/console/Helper/DebugFormatterHelper.php on line 21