Ajax response

Greetings !!

I am working with redux-framework with my custom theme and creating theme option base on i have created all required option but then i am saving it it displaying below error :

In dialog box : “There was a problem with your action. Please try again or reload the page.”

AND

Second error coming in console :
“Refused to execute script from “script link admin ajax url” because its MIME type (‘text/html’) is not executable, and strict MIME type checking is enabled.”

so can you help me on this error.
waiting for your positive feedback on my comment.

Thanks
Ravikant Patel