ExpressJS - throw er Unhandled error event

Question

I created expressjs application using the following commands:

express -e folderName
npm install ejs --save
npm install

When I run the appli

Answer 1

If you've tried killing all node instances and other services listening on 3000 (the default used by the express skeleton setup) to no avail, you should check to make sure that your environment is not defining 'port' to be something unexpected. Otherwise, you'll likely get the same error. In the express skeleton's app.js file you'll notice line 15:

app.set('port', process.env.PORT || 3000);