Ios AFHTTPSession失败：数据无法’；因为它是’；格式正确

我是IOS和Objective C的新手。我正在尝试将值发布到URl，并使用AFHTTPSessionManager获得响应。但是我收到了错误消息：AFHTTPSession失败：无法读取数据，因为它的格式不正确。

这是我的密码

- (void)submitForgetPasswordRequest:(NSString *)email {

    AFHTTPSessionManager *manager = [[AFHTTPSessionManager alloc] initWithSessionConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];
    manager.requestSerializer = [AFJSONRequestSerializer serializer];

    NSDictionary *dict = @{@"Email": email};
  //  NSLog(@"Login dicxtionary : %@", dict);

    MBProgressHUD *hud;
    hud = [MBProgressHUD showHUDAddedTo:self.view animated:YES];
    hud.label.text = @"Please wait. Logging in...";
    [hud showAnimated:YES];

    // send user login data to hosting via AFHTTP Async Request in AFNetworking
    [manager POST:BASEURL parameters:dict success:^(NSURLSessionTask *task, NSString* responseObject) {

        [hud hideAnimated:YES];
        // Login response validation
        NSLog(@"Raw response object : %@", responseObject);
        if ([responseObject isEqualToString:@""]) {
            [self showErrorMessage:@"Request failed" Message:@"Please try again later!"];
        }else {
           // NSError *error = nil;
            //NSLog(@"response type : %@", NSStringFromClass([responseObject class]));
           // NSDictionary *response = [NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingMutableContainers error:&error];
            NSLog(@"Response password Reset : %@", responseObject);
            [self showErrorMessage:@"Success" Message:@"A password reset link has been send to your email address."];
        }
    } failure:^(NSURLSessionTask *task, NSError *error) {
        NSLog(@"AFHTTPSession Failure : %@", [error localizedDescription]);
    }];

}

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有人能帮我修一下吗。tnx.

您也可以使用这一行，然后检查

manager.requestSerializer = [AFJSONRequestSerializer serializer];
   manager.responseSerializer = [AFHTTPResponseSerializer serializer];