微信网页授权获取用户信息时经常返回msg:48001:api unauthorized？

微信公众平台微信网页授权接口获取用户信息接口https://api.weixin.qq.com/sns/userinfo?access_token=ACCESS_TOKEN&openid=OPENID&lang=zh_CN经常返回48001，appid:wx9aab26cd54d87318,报错历史：{“errcode”:48001,“errmsg”:“api unauthorized, hints: [ req_id: NHgcRkNre-WiyrBa ]”}；{“errcode”:48001,“errmsg”:“api unauthorized, hints: [ req_id: oHgcbQ.Ce-phRima ]”}；{“errcode”:48001,“errmsg”:“api unauthorized, hints: [ req_id: xHgcCj4FE-OPzr6a ]”}；但接口实际是有权限的，请问是什么原因呢