File upload 上传文件不再工作，因为最近

我的应用程序升级了。 过去工作过。现在我不能再上传文件了。 （我最近不得不重新安装数据库，这与此有关吗？） 没有错误发生

我的代码里有什么过时的东西吗

在视图中，我使用输入字段输入图片。 我可以浏览和识别图像

选择后，将反映图像名称

视图：

dd显示：

Illuminate\Http\Request {#43 ▼
  #json: null
  #convertedFiles: []
  #userResolver: Closure($guard = null) {#113 ▶}
  #routeResolver: Closure() {#1325 ▶}
  +attributes: Symfony\Component\HttpFoundation\ParameterBag {#45 ▶}
  +request: Symfony\Component\HttpFoundation\ParameterBag {#44 ▼
    #parameters: array:5 [▼
      "_token" => "dzcE1cdTU5QT2j8VEP18PPbbHaQ1G3SGT1hQ5xy6"
      "picture_input" => ""
      "first_name" => "Jan"
      "last_name" => "Jansen"
      "email" => "jan@jan.nl"
    ]
  }
  +query: Symfony\Component\HttpFoundation\InputBag {#51 ▶}

    public function submit(Request $request)
    {
        $profile = Profile::getProfile();
        $user = GameUser::getCurrentUser();
        $invitation = new Invitation();

        $this->validate($request, [
                'first_name' => 'required|regex:/^[\pL\s\-]+$/u',
                'last_name' => 'required|regex:/^[\pL\s\-]+$/u',
                'email' => 'required|email',
        ]);
        
        dd($request) ;

        if ($profile->picture == "#")
        {
            $this->validate($request, ['picture_input' => 'required']);
        }

        if ($request->picture_input){
            $profile->savePicture($request->picture_input);
        }

Illuminate\Http\Request {#43 ▼
  #json: null
  #convertedFiles: []
  #userResolver: Closure($guard = null) {#113 ▶}
  #routeResolver: Closure() {#1325 ▶}
  +attributes: Symfony\Component\HttpFoundation\ParameterBag {#45 ▶}
  +request: Symfony\Component\HttpFoundation\ParameterBag {#44 ▼
    #parameters: array:5 [▼
      "_token" => "dzcE1cdTU5QT2j8VEP18PPbbHaQ1G3SGT1hQ5xy6"
      "picture_input" => ""
      "first_name" => "Jan"
      "last_name" => "Jansen"
      "email" => "jan@jan.nl"
    ]
  }
  +query: Symfony\Component\HttpFoundation\InputBag {#51 ▶}