Unable to to use to my mongodb Atlas database

I am using MongoDB Atlas as my database. when I search http://localhost:5000/book.
I got a error like this - MongoServerError: user is not allowed to do action [find] on [product.book]. did I search wrong? It should be book or books.

const express = require('express');
const cors = require('cors');
require('dotenv').config();
const port = process.env.PORT || 5000;
const app = express();
const { MongoClient, ServerApiVersion } = require('mongodb');

// midlewarwe

app.use(cors());
app.use(express.json());

const uri = `mongodb+srv://${process.env.DB_USER}:${process.env.DB_PASS}@cluster0.ibawcfn.mongodb.net/?retryWrites=true&w=majority`;
const client = new MongoClient(uri, {
  useNewUrlParser: true,
  useUnifiedTopology: true,
  serverApi: ServerApiVersion.v1,
});

async function run() {
  try {
    await client.connect();
    const bookCollection = client.db('product').collection('book');

    app.get('/book', async (req, res) => {
      const query = {};
      const cursor = bookCollection.find(query);
      const books = await cursor.toArray();
      res.send(books);
    });
    // app.post('/books', async (req, res) => {

    //     const  newBook = req.body;
    //     const result = await bookCollection.insertOne(newBook);
    //     res.send(result);
    // });
  } finally {
  }
}
run().catch(console.dir);

app.get('/', (req, res) => {
  res.send('hello world ');
});

app.listen(port, () => {
  console.log('listening on port ', port);
});