I was trying to log every post request to the path /users. This is my users.js:

var express = require('express');
var router = express.Router();

/* GET users listing. */
router.get('/', function(req, res, next) {
  res.send('respond with a resource');
});

router.post('/users', function(req, res, next){
  console.log("POST from a user");
  res.send("task 2-2 called");
});

module.exports = router;

However, when I make a POST request to /users, a "Not found" error is shown.

When I put the same router in index.js, it works just fine. How can I fix this?