Fatal error: Uncaught Error: Class 'Symfony\Component\Console\Exception\CommandNotFoundException' not found in /home/devmecseminars/public_html/mec/vendor/symfony/console/Exception/NamespaceNotFoundException.php:19 Stack trace: #0 {main} thrown in /home/devmecseminars/public_html/mec/vendor/symfony/console/Exception/NamespaceNotFoundException.php on line 19