Fatal error: Uncaught Error: Class "Symfony\Component\HttpFoundation\ParameterBag" not found in D:\Apache24\www\gs1_taizhou\back\vendor\symfony\http-foundation\InputBag.php:21 Stack trace: #0 {main} thrown in D:\Apache24\www\gs1_taizhou\back\vendor\symfony\http-foundation\InputBag.php on line 21