@Override
    @NonNull
    protected String getExtendedErrorMsg(final Response response) {
        final OkapiError error = OkapiClient.decodeErrorResponse(response);
        if (error.getResult() == OkapiErrors.INVALID_TIMESTAMP) {
            return res.getString(R.string.init_login_popup_invalid_timestamp);
        }
        return StringUtils.EMPTY;
    }
Return an extended error in case of an invalid time stamp

@param response network response
main/src/main/java/cgeo/geocaching/connector/oc/OCAuthorizationActivity.java