Fatal error: Uncaught Error: Class "Symfony\Component\Yaml\Command\LintCommand" not found in /home/astechc1/public_html/vendor/symfony/framework-bundle/Command/YamlLintCommand.php:24 Stack trace: #0 {main} thrown in /home/astechc1/public_html/vendor/symfony/framework-bundle/Command/YamlLintCommand.php on line 24