how to replace cannot get with 404 error
app.use(function(req, res, next){
res.status(404);
// respond with html page
if (req.accepts('html')) {
res.render('404', { url: req.url });
return;
}
// respond with json
if (req.accepts('json')) {
res.send({ error: 'Not found' });
return;
}
// default to plain-text. send()
res.type('txt').send('Not found');
});