Fatal error: Uncaught Error: Class "Symfony\Component\Yaml\Command\LintCommand" not found in /home/zdpktgd/ptc/vendor.old/symfony/framework-bundle/Command/YamlLintCommand.php:26 Stack trace: #0 {main} thrown in /home/zdpktgd/ptc/vendor.old/symfony/framework-bundle/Command/YamlLintCommand.php on line 26