Fatal error: Uncaught Error: Class "Symfony\Component\HttpFoundation\File\File" not found in D:\Apache24\www\api.print.nxytec.cn\back\vendor\laravel\framework\src\Illuminate\Http\File.php:7 Stack trace: #0 {main} thrown in D:\Apache24\www\api.print.nxytec.cn\back\vendor\laravel\framework\src\Illuminate\Http\File.php on line 7