iOS 使用AFNetworking遇到错误 Request failed: unacceptable content-type: text/html

错误日志：

Error Domain=com.alamofire.error.serialization.response Code=-1016 "Request failed: unacceptable content-type: text/html" UserInfo={com.alamofire.serialization.response.error.response=<NSHTTPURLResponse: 0x7f999be478d0> { URL: myUrlXXXXXX } { status code: 200, headers {Error Domain=com.alamofire.error.se