In CURD operation Update Not work, PUT https://pacific-gorge-29321.herokuapp.com/item/627687994c38508f7b5f8e12 404 (Not Found)

Question

In CURD operation Update Not work, show this error: PUT https://pacific-gorge-29321.herokuapp.com/item/627687994c38508f7b5f8e12 404 (Not Found) Backend code:

// update data 
        app.put('/item/:id', async (req, res) => {
            const item = req.body;
            const id = req.params.id;
            console.log(item, id);
            const filter = {_id: ObjectId(id)};
            const options = {update: true};
            const updateDoc = {
                $set: {
                    ...item,
                },
            };
            const result = await itemCollection.updateOne(
                filter,
                updateDoc,
                options
            );
            res.send(result)
        })

Frontend Code:

 const deliveredItem = id => {
        const proceed = window.confirm("Are You Sure?");
        if (proceed) {
            const url = `https://pacific-gorge-29321.herokuapp.com/item/${id}`
            fetch(url, {
                method: 'PUT'
            })
                .then(res => res.json())
                .then(data => {
                    console.log(data);
                })
        }
    }

ERROR:

PUT https://pacific-gorge-29321.herokuapp.com/item/627687994c38508f7b5f8e12 404 (Not Found)

error screenshot