Node running test Timeout has occurred [SOLVED]

I get error when I try my code for Basic Node and Express - Start a Working Express Server
Here is the error:

// running test
Timeout has occurred
// tests completed

and here is my code.

var express = require('express');
var app = express();

// --> 7)  Mount the Logger middleware here

// --> 11)  Mount the body-parser middleware  here

/** 1) Meet the node console. */

console.log("Hello World");

/** 2) A first working Express Server */
app.get('/', function(req, res) {
            res.send('Hello Express');

// This would be part of the basic setup of an Express app
// but to allow FCC to run tests, the server is already active
app.listen(process.env.PORT || 3000 ); 

//---------- DO NOT EDIT BELOW THIS LINE --------------------

 module.exports = app;

Any help would be greatly appreciated.

I think you missed the next in function(req, res, next) :

I needed to comment out the code from previous challenges.

Thank you.