Fatal error: Uncaught Error: Class 'Symfony\Component\Serializer\Exception\UnexpectedValueException' not found in D:\workspaces\liZiPingBack\vendor\symfony\serializer\Exception\NotEncodableValueException.php:17 Stack trace: #0 {main} thrown in D:\workspaces\liZiPingBack\vendor\symfony\serializer\Exception\NotEncodableValueException.php on line 17