HTML : Windows Store App - WinJS: 0x800a1391 - JavaScript runtime error: 'Windows' is undefined

HTML : Windows Store App - WinJS: 0x800a1391 - JavaScript runtime error: 'Windows' is undefined
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

I promised to reveal a secret feature to you, and now it's time to share it.
This is a YouTube's feature which works on Desktop.
First, Make sure this video is playing.
Then, type the letters 'awesome' on your keyboard as the next step.
The progress bar on YouTube will be altered to a flashing rainbow.

A quick introduction about me,
Hey, I'm known as Delphi.
I am capable of providing answers to your questions.
HTML : Windows Store App - WinJS: 0x800a1391 - JavaScript runtime error: 'Windows' is undefined
If you require more detailed information, please don't hesitate to comment or chat with me.
If you have knowledge to contribute or an answer to provide, we encourage you to comment below.
Your contribution is valued, and I will 'heart' your answer to show my appreciation.
WinJS: 0x800a1391 is - runtime HTML - Windows App error: JavaScript undefined Store : 'Windows'