AFN3.1使用报错

今天项目在使用AFN3.1时,执行如下代码出现错Domain=com.alamofire.error.serialization.response Code=-1016 "Request failed

NSString *account = self.userAccountTextField.text;
    NSString *password = self.passwordTextField.text;
    // 1.1.设置请求参数
    NSString *postUrlStr = [QYBaseUrl stringByAppendingString:@"userLogin"];
    NSMutableDictionary *params = [NSMutableDictionary dictionary];
    params[@"username"] =  account ; // @"18513138246"
    params[@"password"] = password; // @"test111"-->md5;
    
    // 2.发送请求
    [SVProgressHUD show];
    [self.manager POST:postUrlStr parameters:params progress:nil  success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {

        QYLog(@"响应------%@",responseObject);

    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {
        QYLog(@"🐶----错误---%@",error);
        [SVProgressHUD showInfoWithStatus:@"网络异常\n请检查网络,稍后再试"];
    }];

解决办法是: 在发送请求前加上如下代码,为sessionManager实例设置acceptableContentTypes

 self.manager.responseSerializer.acceptableContentTypes = [NSSet setWithObjects:@"application/json", @"text/json", @"text/javascript",@"text/html", nil];