https://api.weixin.qq.com/sns/oauth2/access_token?appid=APPID&secret=SECRET&code=CODE&grant_type=authorization_code

这个接口，用着一年多没问题的，昨晚突然有半个小时一直失败，获取code后，获取不到access_token。 日志如下(部分信息？号代替)：不知道哪个环节有问题？ 没改过任何东西，半小时后又正常了，这个接口有调用频率限制之类吗？

2022-09-18 19:24:14.554 2022-09-18 19:24:14.554 DEBUG FTWxPay.JsApiPay: JsApiPay::GetJsApiParam is processing...

2022-09-18 19:24:14.554 2022-09-18 19:24:14.554 DEBUG FTWxPay.JsApiPay: Get jsApiParam : {"appId":"wxe31f6d5ce42c????","nonceStr":"2976873424","package":"prepay_id=wx18192414967999ecef534f1a64????0000","paySign":"F34CEB5EA0AD9DE0F9CBDF19C983????","signType":"MD5","timeStamp":"1663500255"}

2022-09-18 19:24:14.555 2022-09-18 19:24:14.554 INFO ASP.pay_picture_print_aspx: _wxJsApiParam : {"appId":"wxe31f6d5ce42c????","nonceStr":"2976873424","package":"prepay_id=wx18192414967999ecef534f1a64????0000","paySign":"F34CEB5EA0AD9DE0F9CBDF19C983????","signType":"MD5","timeStamp":"1663500255"}

2022-09-18 19:24:14.745 2022-09-18 19:24:14.745 DEBUG FTWxPay.JsApiPay: Get code : 051vrM000PY5zO1JPC200tSh9j2vrM09

2022-09-18 19:24:14.801 2022-09-18 19:24:14.801 DEBUG FTWxPay.JsApiPay: GetOpenidAndAccessTokenFromCode response : {"errcode":-1,"errmsg":"system error, rid: 6326ffdf-41c7c0d8-5a6bb364"}