Fatal error: Uncaught Error: Class 'Symfony\Component\Console\Command\Command' not found in /srv/www/c5www/html/updates/concrete5-8.5.1/concrete/vendor/symfony/yaml/Command/LintCommand.php:31 Stack trace: #0 {main} thrown in /srv/www/c5www/html/updates/concrete5-8.5.1/concrete/vendor/symfony/yaml/Command/LintCommand.php on line 31