Fatal error: Uncaught Error: Class 'Symfony\Component\Console\Command\Command' not found in /home/devmecseminars/public_html/mec/vendor/symfony/yaml/Command/LintCommand.php:32 Stack trace: #0 {main} thrown in /home/devmecseminars/public_html/mec/vendor/symfony/yaml/Command/LintCommand.php on line 32