gistfile1.txt

val str = if (json.has("errors") && json.getJSONArray("errors").length() > 0 &&
          (json.getJSONArray("errors").get(0) as JSONObject).length() > 0 &&
          (json.getJSONArray("errors").get(0) as JSONObject).keys().hasNext()) {
          val errorsObj = json.getJSONArray("errors").get(0) as JSONObject
          errorsObj.keys()
            .asSequence()
            .map { errorsObj.getString(it) }
            .joinToString("\n")
        } else if (json.has("error_description")) {
          json.getString("error_description")
        } else if (json.has("message")) {
          json.getString("message")
        } else {
          errorString
        }