HTML : Failed to execute query selector on document, id is not a valid selector

HTML : Failed to execute query selector on document, id is not a valid selector
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

I promised to share a hidden feature with you, and here it is.
This is a YouTube's feature which works on Desktop.
First, Ensure that the video is playing before proceeding.
Next, enter the letters 'awesome' on your keyboard.
The progress bar on YouTube will be altered to a flashing rainbow.

A little intro about me,
Hello, I am Delphi.
I can help you find the answers you are looking for.
HTML : Failed to execute query selector on document, id is not a valid selector
Let me know if you have more specific queries by commenting or chatting with me.
If you have an answer or any relevant information to share, please comment below.
I will express my appreciation for your answer by 'hearting' it.
selector valid : selector execute id on not document, HTML query is a to Failed