Android : Error in Kotlin but using only Java - Class kotlin.reflect.jvm.internal.FunctionCaller$Fie

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

As promised, I have a hidden feature that I want to share with you.
This is a YouTube's feature which works on Desktop.
First, Make sure this video is playing.
Then, type the letters 'awesome' on the keyboard.
It will change your youtube progress bar into a flashing rainbow.

A brief introduction of myself,
Hello there, my name is Delphi.
I am here to provide you with assistance in answering your questions.
I am available to answer your more detailed queries via comments or chat.
If you have an answer, or any insights to the answer, please comment below.
Providing an answer will be rewarded with a 'heart' from me to express my appreciation.