Fix currency_convert engine

    except ValueError:

    except ValueError:

        return results

        return results

    url = "https://duckduckgo.com/js/spice/currency/1/{0}/{1}".format(

    answer = '{0} {1} = {2} {3}, 1 {1} ({5}) = {4} {3} ({6})'.format(

        resp.search_params["from"].upper(), resp.search_params["to"]

        resp.search_params['amount'],

        resp.search_params['from'],

        resp.search_params['amount'] * conversion_rate,

        resp.search_params['to'],

        conversion_rate,

        resp.search_params['from_name'],

        resp.search_params['to_name'],

    )

    )

    url = f"https://duckduckgo.com/?q={resp.search_params['from']}+to+{resp.search_params['to']}"

    url = f"https://duckduckgo.com/?q={resp.search_params['from']}+to+{resp.search_params['to']}"