不好意思，第一次接触go 请问go build之后提示这个错误的原因您知道嘛？

[ywray]

github.com/Adyzng/go-jd/core

core/cookies.go:145: enc.SetIndent undefined (type *json.Encoder has no field or method SetIndent)
core/jingdong.go:189: undefined: http.ErrUseLastResponse