because its mime type ('text/plain') is not executable, and strict mime type checking is enabled.

Question

Problem :

I am getting mime type error

because its mime type ('text/plain') is not executable, and strict mime type checking is enabled.

Answer 1

One can use the browser extension to remove X-Content-Type-Options response header for raw.githubusercontent.com files. I found couple of browser extensions those can modify response headers.

1. Requestly: Chrome + Firefox
2. Modify Headers: Firefox

1: Use of Modify Headers Rule and removal of the response header

Steps

1. Download and Install Requestly from http://www.requestly.in
2. Please go to Rules Page
3. Please click on Add Icon to create a desired rule
4. Select Modify Headers
5. Give a desired Name and suitable Descripton
6. Select Remove -> Response -> X-Content-Type-Options
7. In your Source field please enter Url -> Contains -> raw.githubusercontent.com

2: Use of Replace host Rule

1. Download and Install Requestly from http://www.requestly.in
2. Please go to Rules Page
3. Please click on Add Icon to create a rule
4. Please replace raw.githubusercontent.com with rawgit.com