获取小程序用户画像数据API数据为空？

{

    "ref_date": "20201211-20201217",

    "visit_uv_new": {

        "province": [],

        "city": [],

        "genders": [],

        "platforms": [],

        "devices": [],

        "ages": []

    },

    "visit_uv": {

        "province": [],

        "city": [],

        "genders": [],

        "platforms": [],

        "devices": [],

        "ages": []

    }

}

时间传的对的，就是没有数据。昨天还有呢