微信支付企业付款到零钱，由于公司新更换了商户号，开发将原先的商户号和证书换成了新的商户号之后发起接口调用，部分能正常付款，部分出现返回：签名错误（如下图）：

[ info ] 红包提交微信报文：{"partner_trade_no":"*************84941726462","openid":"************O47MHPMpxK8TzFR00M","check_name":"NO_CHECK","amount":100,"desc":"提现"}

[ info ] 微信返回报文：{"return_code":"SUCCESS","return_msg":"SIGN_ERROR","mch_appid":"wx6b9a6*********","mchid":"1604******","result_code":"FAIL","err_code":"SIGN_ERROR","err_code_des":"签名错误"}