Fatal error: Uncaught Error: Class 'Nelmio\ApiDocBundle\Describer\ExternalDocDescriber' not found in D:\workspaces\liZiPingBack\vendor\nelmio\api-doc-bundle\Describer\ApiPlatformDescriber.php:17 Stack trace: #0 {main} thrown in D:\workspaces\liZiPingBack\vendor\nelmio\api-doc-bundle\Describer\ApiPlatformDescriber.php on line 17