lbls = append(lbls, "action", e.Action)
	}
	if e.LikelyCause != "" {
		lbls = append(lbls, "likelyCause", e.LikelyCause)
	}
	if e.Err != nil {
		lbls = append(lbls, "err", e.Err.Error())
	}
	return s.WithLabels(lbls...)
}

func (e *Error) Error() string {
	if e == nil {
		return ""
	}
	return fmt.Sprintf("\tmoreInfo=%s impact=%s action=%s likelyCause=%s err=%v",
		e.MoreInfo, e.Impact, e.Action, e.LikelyCause, e.Err)

	actionCheckBugList                         = "see https://istio.io/latest/about/bugs for possible solutions."

	// LikelyCause
	likelyCauseAPIServer     = "a problem with the Kubernetes API server"
	likelyCauseConfiguration = "an incorrect or badly formatted configuration"
	likelyCauseSoftwareBug   = "an issue with the Istio code"