已经有android和iOS平台上架，使用了现有的服务端接口创建支付信息appResultInfo

private async wechatPay(appResultInfo:Record<string, string>):Promise<SendReqResultWrap> {
  let req = new wxopensdk.PayReq
  req.partnerId = appResultInfo['partnerid']
  req.appId = appResultInfo['appid']
  req.packageValue = appResultInfo['package']
  req.prepayId = appResultInfo['prepayid']
  req.nonceStr = appResultInfo['noncestr']
  req.timeStamp = appResultInfo['timestamp']
  req.sign = appResultInfo['sign']
  return await this.wxApi.sendReq(YTDAppManager.getContext(), req)
}

这段代码发执行返回false，查看日志[wxopensdk::WXApi] openWechat fail by err:{"code":16000001}

请问该怎么排查问题