Fatal error: Uncaught Error: Interface 'Symfony\Component\Validator\Mapping\Loader\LoaderInterface' not found in D:\workspaces\liZiPingBack\vendor\symfony\doctrine-bridge\Validator\DoctrineLoader.php:32 Stack trace: #0 {main} thrown in D:\workspaces\liZiPingBack\vendor\symfony\doctrine-bridge\Validator\DoctrineLoader.php on line 32