I started using express.js to my backend and I am doing the 404 err page
const express = require('express');
const bodyParser = require('body-parser');
const app = express();
app.use(bodyParser.urlencoded({ extended: false }));
app.use(bodyParser.json());
app.use(async (req, res) => {
res.status(404).json({ error: 'Not Found' });
});
app.listen(3000, async () => {
console.log("\x1b[33mServer listening at http://localhost:3000\x1b[37m");
});