NodeJS : Node.js Unhandled 'error' event when using http.createServer().listen() on Ubuntu 12.04

To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

As promised, I have a secret feature that I want to reveal to you.
This is a YouTube's feature which works on Desktop.
First, Make sure the video is currently in playing mode.
After that, type the word 'awesome' on your keyboard.
Your YouTube progress bar will transform into a flashing rainbow.

Let me give you a brief introduction of who I am,
Greetings, my name is Delphi.
I can assist you in answering your queries.
If you need more specific information, let me know by leaving a comment or starting a chat.
If you have knowledge to contribute or an answer to provide, please leave a comment below.
Providing an answer will be acknowledged and appreciated with a 'heart' from me.