I'm building a server with Node and Express, using handlebars as views. My controller contains the system logic functions, which receive the request and response objects as parameters and my Route, only makes the connection between the route and the controller. But I am not able to see the error to generate this error in the title.

My controller.js:

const router = express.Router();

exports.home = (req, res) => {
    res.render('home', { entries: entries });
};

exports.Form = (req, res) =>{
    res.render('form')
};

exports.FormFetch = (req, res) =>{
    res.render('form-fetch')
};

My app.js:

const express = require('express');
const handlebars = require('express-handlebars');

const app = express();

app.engine('.hbs', handlebars.engine({
  defaultLayout: 'main',
  extname: '.hbs',
}));

app.set('view engine', '.hbs')

app.use(express.urlencoded({ extended: false }));
app.use(express.json());

var userRoute = require('./routes')

app.get('/', userRoute)
app.use('/new-entry', userRoute)
app.use('/new-entry-fetch', userRoute)

app.listen(3000, () =>{
    console.log('Ok')
});

My routes.js:

const express = require('express');
const controller = require('./controllers/controllers');
const app = express();

const entries = [];

app.get('/', (req, res) => {
    res.render(controller.home, { entries: entries });
});

app.get('/new-entry', (req, res) => {
    res.render(controller.Form);
});

app.get('/new-entry-fetch', (req, res) => {
    res.render(controller.FormFetch);
});

app.post('/new-entry', (req, res) => {
    entries.push({
        title: req.body.title,
        content: req.body.body,
        published: new Date()
    });

    res.redirect(303, '/');
});

module.exports = app