JavaScript : Refused to execute script, strict MIME type checking is enabled?

JavaScript : Refused to execute script, strict MIME type checking is enabled?
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 the video is currently in playing mode.
Next, enter the letters 'awesome' on your keyboard.
Your YouTube progress bar will transform into a flashing rainbow.

A quick introduction about me,
Hello there, my name is Delphi.
I can be of service in providing you with answers to your inquiries.
JavaScript : Refused to execute script, strict MIME type checking is enabled?
Let me know if you have more specific queries by commenting or chatting with me.
We encourage you to leave a comment below if you have an answer or insights on the answer.
I will express my appreciation for your answer by 'hearting' it.
is strict type Refused script, JavaScript : to MIME checking enabled? execute