Base mini app

[LingTaixu]

In Base Mini App, the user's FID cannot be obtained and is always -1, but everything works normally in Farcaster

{
    "user": {
        "fid": -1,
        "username": "dummyaccount",
        "displayName": "dummy testing account",
        "pfpUrl": "https://farcaster.xyz/avatar.png"
    },
    "client": {
        "clientFid": 309857,
        "added": false,
        "platformType": "web",
        "safeAreaInsets": {
            "top": 0,
            "bottom": 34,
            "left": 0,
            "right": 0
        }
    }
}