为什么状态为null？

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After authorization and redirect to /userProfile page I get error:

未捕获（承诺）TypeError：无法读取null的属性“名称”。

I have <Page /> component.

的代码：

const Page = () => {
    return (
        <div>
            <div style={{display: "flex", alignItems: "center", justifyContent: "space-between"}}>
                <h1>{`${userData.name} ${userData.surname}`}</h1>
                <button onClick={() => logout()} style={{display: "block"}}
                        className="btn btn-large ">
                    Выйти</button>
            </div>
        </div>
    );
};

它通过useState挂钩使用名为userData的状态中的值

const [loading, setLoading] = useState(true);
const [userData, setUserData] = useState({name: "", surname: "", posts: [], email: "", password: ""});

我在useEffect挂钩中获取数据

const request = useCallback(async (url, method = 'POST', body = null, headers = {}) => {
    setLoading(true)
    try {
        if (body) {
            body = JSON.stringify(body)
            headers['Content-Type'] = 'application/json'
        }
        const response = await fetch(url, {method, body, headers});
        const data = await response.json();
        setLoading(false);
        return data;
    } catch (e) {
        setLoading(false)
        throw e
    }
}, []);
useEffect(() => {
    const response = request("/api/user/getDataByUserId", "POST", {userId: userId});
    response.then(r => {
        setUserData(r.data);
    });
}, [request, userId]);

我从AuthContext获得的userId 我已尝试解决此问题两天，请帮助我

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