openid为空是啥原因

一键登陆后，数据库有了一条数据，但是tiktok_openid没有值是啥原因呢？

{  
    "dcloud_appid": [  
        "__UNI__9445273"  
    ],  
    "last_login_date": 1705317543128,  
    "last_login_ip": "103.85.169.227",  
    "register_env": {  
        "app_name": "xxx",  
        "app_version": "2.0.1",  
        "app_version_code": "201",  
        "appid": "__UNI__9445273",  
        "client_ip": "103.85.169.222",  
        "os_name": "ios",  
        "uni_platform": "mp-toutiao"  
    },  
    "third_party": {  
        "mp_tiktok": {  
            "session_key": ""  
        }  
    },  
    "tiktok_openid": {  
        "mp": "",  
        "mp__UNI__9445273": ""  
    },  
    "token": [  
        "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1aWQiOiJiNzUxZjI4MDY1YTUwZWQ3MDcyM2NjNDg2NzM0ZDcwNyIsInJvbGUiOltdLCJwZXJtaXNzaW9uIjpbXSwidW5pSWRWZXJzaW9uIjoiMS4wLjE2IiwiaWF0IjoxNzA1MzE2MDU2LCJleHAiOjE3MDU5MjA4NTZ9.v8Z2jY1UuMuB2ffFr-NQ-ms8oBkgRAGeL_mpoMeWFTo"  
    ]  
}