Fatal error: Uncaught Error: Class 'Symfony\Component\Console\Command\Command' not found in /home/pynchc/public_html/DEV/Old/concrete/vendor/symfony/yaml/Command/LintCommand.php:28 Stack trace: #0 {main} thrown in /home/pynchc/public_html/DEV/Old/concrete/vendor/symfony/yaml/Command/LintCommand.php on line 28