https://api.weixin.qq.com/sns/oauth2/access_token?appid=xxxxxx&secret=bddc416e9bbc7ce4a8&code=021FCwFa1E3LCz0tT5Ia1cgzrO1FCwFm&grant_type=authorization_code

通过code获取openid接口报错

{"errcode":-1,"errmsg":"system error, hints: [req_id: kIheDfMre-.ozfAa ]"}