title: Image Uploading with AFNetworking 3.0
body: <p>I am trying to upload images to server with AFNetworking 3.0.<br></p>
  
  <p>Here is my code :</p>
  
  <pre><code>AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
      [[manager POST:setUrl parameters:parameters constructingBodyWithBlock:^(id&lt;AFMultipartFormData&gt;  _Nonnull formData)
      {
          //Current date with image name
          NSDateFormatter *dateFormatter=[[NSDateFormatter alloc] init];
          [dateFormatter setDateFormat:@"yyyy-MM-dd HH:mm:ss a"];
          [formData appendPartWithFileData:image name:namePara fileName:[NSString stringWithFormat:@"img_%@",[dateFormatter stringFromDate:[NSDate date]]] mimeType:@"image/png"];
          }progress:nil
          success:^(NSURLSessionDataTask * _Nonnull task, id  _Nonnull responseObject)
          {
              NSLog(@"%@",responseObject);
              [GMDCircleLoader hideFromView:self.view animated:YES];
              NSMutableDictionary *dir = [[NSMutableDictionary alloc]initWithDictionary:responseObject];
              if([dir valueForKey:@"error"])
              {
                  UIAlertController *alert = [[singletone sharedManager]showAlert:NSLocalizedString(@"SIGNIN", nil) :[NSString stringWithFormat: @"%@",[dir valueForKey:@"error"]] ];
                  [self.parentViewController presentViewController:alert animated:YES completion:nil];
              }
              else
              {
                  //Successfull
                  UIAlertController *alertController = [UIAlertController alertControllerWithTitle:NSLocalizedString(@"REGISTRATION", nil) message:[dir valueForKey:@"success"] preferredStyle:UIAlertControllerStyleAlert];
                  UIAlertAction* ok = [UIAlertAction actionWithTitle:NSLocalizedString(@"OK", nil) style:UIAlertActionStyleCancel handler:^(UIAlertAction * action)
                  {
                      [self.navigationController popViewControllerAnimated:YES];
                  }];
              [alertController addAction:ok];
              [self presentViewController:alertController animated:YES completion:nil];
              }
              NSLog(@"response object : %@",responseObject);
          } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {                        NSLog(@"failure : %@",error.localizedDescription);
      }]resume];
  </code></pre>
  
  <p><br>It will get in success block with <strong>error : error In Image Uploading.</strong><br> I have also tried from Postman to check my API response, but it's work fine from Postman. What is the problem with this code?</p>