调用https://api.weixin.qq.com/wxa/generatescheme接口是有"errcode":-1的情况：

{"errcode":-1,"errmsg":"system error rid: 621362c2-3a042edf-5f6f5bb1","success":false}

{"errcode":-1,"errmsg":"system error rid: 621362bc-1681c7ce-3ec988a9","success":false}