车主平台用户授权H5跳转报“当前请求人数较多，请稍后再试”？

https://payapp.weixin.qq.com/vehicle/plat/indextemplate?appid=wxcbda96de0b165486&mch_id=10000098&openid=oUpF8uMEb4qRXf22hE3X68TekukE&plate_number=%E7%B2%A4B888888&sign=EE088059BBC9141264F8D14293AD6C4BB94CEA8C08AA98FBF93E262D445F8FF5&sign_type=HMAC-SHA256&nonce_str=5K8264ILTKCH16CQ2502SI8ZNMTM67VS&trade_scene=PARKING#wechat_redirect

该链接是从文档中拿到的，会报这个问题。我用自己的appid拼出来的链接同样会报这个问题

请问怎么如何解决