Fatal error: Uncaught Error: Class 'Symfony\Component\Yaml\Command\LintCommand' not found in D:\workspaces\liZiPingBack\vendor\symfony\framework-bundle\Command\YamlLintCommand.php:24 Stack trace: #0 {main} thrown in D:\workspaces\liZiPingBack\vendor\symfony\framework-bundle\Command\YamlLintCommand.php on line 24