Call to undefined method Illuminate\Support\Facades\Request::all()

版本:laravel5.8       

system: win10+php7.2+nginx1.5+mysql5.7



以下写法报错(Call to undefined method Illuminate\Support\Facades\Request::all()):

```

use Illuminate\Support\Facades\Request;


public function upload(Request $request) {

        dd($request->all());

 }



但是以下写法就可以:

use Illuminate\Support\Facades\Request;


public function upload(Request $request) {

        dd(Request::all());

 }



请问这是为什么?

```

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