https://developers.weixin.qq.com/miniprogram/dev/OpenApiDoc/img-ocr/img/scanQRCode.html

调用条形码/二维码识别接口时，POST https://api.weixin.qq.com/cv/img/qrcode?access_token=ACCESS_TOKEN

偶尔响应错误报文 {"errcode":3,"errmsg":" hint: [uFjhuA04498835] rid: 6588e571-0fd61654-1fae50b2"}，未在官网找到关于errcode=3的错误描述，请大家帮忙看下