我尝试运行useEffect钩子从json文件中获取数据。然而，useEffect没有运行，因此屏幕显示为空白。这是我尝试获取数据并更新状态的代码部分。

const RestaurantLayout = ({ children: Component, ...props }) => {
    const [restaurant, setRestaurant] = useState([])

    useEffect(() => {
        console.log("useEffect called");
        fetch('/restaurantData.json')
        .then(response => {
            console.log(response)
            return response.json();})
        .then((resData) => {
            setRestaurant(resData);
        })
        .catch(error => console.error(error));
    }, [])

json文件在public文件夹中。
然而，当我找到解决这个问题的方法时，我从json文件中复制了json数据，并手动将其放入useState中，然后useEffect确实运行了。这是代码：

const RestaurantLayout = ({ children: Component, ...props }) => {
    const [restaurant, setRestaurant] = useState([
        {
            _id: "1",
            isPro: true,
            isOff: false,
            name: "Nathu's Sweets",
            address: "Ashok Vihar, New Delhi",
            restaurantRating: "3.7",
            cuisine: [
                "North Indian",
                "Sweets",
                "South Indian",
                "Chinese",
                "Street Food",
                "Fast Food",
                "Desserts"
            ],
        costForOne: "350",
        images: [
                {
                    "location":
                        "/tiffin3.jpg"
                },
                {
                    "location":
                        "/foodimg1.jpg"
                },
                {
                    "location":
                        "/foodimg2.jpg"
                },
                
                {
                    "location":
                        "/foodimg3.jpg"
                }
            ]
        },
])

useEffect(() => {
        console.log("useEffect called");
        fetch('/restaurantData.json')
        .then(response => {
            console.log(response)
            return response.json();})
        .then((resData) => {
            setRestaurant(resData);
        })
        .catch(error => console.error(error));
    }, [])

我不知道为什么。请帮帮我。