hello everyone i write this code
const express = require('express');
const jwt = require('express-jwt');

const app = express();

// Middleware to authenticate requests using JWT
app.use(jwt({ secret: 'your-secret-key' }).unless({ path: ['/login'] }));

// Example route that requires authentication
app.get('/protected', (req, res) => {
// If the request reaches here, it means it's authenticated
res.send('You are authenticated!');
});

// Example route for logging in and obtaining JWT token
app.post('/login', (req, res) => {
// Logic to authenticate user and generate JWT token
// Once authenticated, send back JWT token
const token = jwt.sign({ username: 'exampleUser' }, 'your-secret-key');
res.json({ token });
});

app.listen(3000, () => {
console.log('Server is running on port 3000');
});
and i get this error

TypeError: jwt is not a function

” i do not understand why

i try with chat gpt and Gemeni but i don’t solve the problem