Fatal error: Uncaught Error: Class 'Symfony\Component\Console\Command\Command' not found in /var/www/up.tantal-metall.com/yii_up/vendor/symfony/yaml/Command/LintCommand.php:35 Stack trace: #0 {main} thrown in /var/www/up.tantal-metall.com/yii_up/vendor/symfony/yaml/Command/LintCommand.php on line 35