调取生成小程序码接口接口返回错误码 errorcode -1,是什么原因？
POST https://api.weixin.qq.com/wxa/getwxacodeunlimit?access_token=ACCESS_TOKEN 调用接口的参数：{"width":200,"auto_color":true,"page":"pages/personals/single_groups2/index","scene":"eb7806e748f2ce9d"} 接口返回：{"errcode":-1,"errmsg":"system error hint: [xvYI0a04101091]"}
