Fatal error: Uncaught Error: Class 'Symfony\Bundle\FrameworkBundle\CacheWarmer\AbstractPhpFileCacheWarmer' not found in D:\workspaces\liZiPingBack\vendor\symfony\framework-bundle\CacheWarmer\ValidatorCacheWarmer.php:31 Stack trace: #0 {main} thrown in D:\workspaces\liZiPingBack\vendor\symfony\framework-bundle\CacheWarmer\ValidatorCacheWarmer.php on line 31