我正在尝试使用okclient包将文件从android应用程序上传到restapi服务
但我得到了这个错误
错误：找不到symbol.settype（multipartbody.form）symbol:variable multipartbody 位置：xxclass
代码：

public  void run(String urll, String fpath) throws Exception {
          MediaType MEDIA_TYPE_PNG = MediaType.parse("text/csv");
       // Use the imgur image upload API as documented at https://api.imgur.com/endpoints/image
       RequestBody requestBody = new MultipartBody.Builder()
               .setType(MultipartBody.FORM)
               .addFormDataPart("file", "square.csv",RequestBody.create(MediaType.parse("multipart/form-data"),
                               new File(fpath)))
                               .build();

       Request request = new Request.Builder()
               .url(getAbsoluteUrl(urll))
               .post(requestBody)
               .build();

       try (Response response = client1.newCall(request).execute()) {
           if (!response.isSuccessful()) throw new IOException("Unexpected code " + response);

           System.out.println(response.body().string());
       }
   }

我用的是okhttp3软件包- implementation 'com.squareup.okhttp3:okhttp:4.9.0' 但我仍然面临同样的问题，知道吗？
参考链接：https://www.baeldung.com/guide-to-okhttp