public static function refresh_token(Request $request)
    {
        $refresh_token = $request->get('refresh_token');
        $app_key = env('APP_KEY');
        $enc_key = base64_decode(substr($app_key, 7));
        try {
            $crypto = Crypto::decryptWithPassword($refresh_token, $enc_key);
        } catch (Exception $exception){
            return $exception;
        }
        return  json_decode($crypto, true);
    }