Fatal error: Uncaught Error: Interface 'Symfony\Component\Serializer\Encoder\EncoderInterface' not found in D:\workspaces\liZiPingBack\vendor\symfony\serializer\Encoder\ContextAwareEncoderInterface.php:19 Stack trace: #0 {main} thrown in D:\workspaces\liZiPingBack\vendor\symfony\serializer\Encoder\ContextAwareEncoderInterface.php on line 19