R : Error in my code : object of type 'closure' is not subsettable

R : Error in my code : object of type 'closure' is not subsettable
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

I have a hidden feature that I promised to tell you about.
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.
It will change your youtube progress bar into a flashing rainbow.

Let me give you a quick introduction about myself,
Hey there, I am Delphi, pleased to make your acquaintance.
Let me help you get the answers you need to your questions.
R : Error in my code : object of type 'closure' is not subsettable
Let me know if you have more specific queries by commenting or chatting with me.
Your input is appreciated, so please leave a comment below with your answer or insights to the answer.
A 'heart' from me will indicate my appreciation for your answer.
is my subsettable of 'closure' : Error type : code in not object R