AFN 错误信息解析不出来

报 Error Domain=com.alamofire.error.serialization.response Code=-1011

解决方案自己提取错误信息解析

NSData *errorData = error.userInfo[AFNetworkingOperationFailingURLResponseDataErrorKey];

NSDictionary *serializedData = [NSJSONSerialization JSONObjectWithData: errorData options:kNilOptions error:nil];