error.css X-Content-Type-Options: nosniff

[CaseyR]

One of my clients has been running some tests and encountered this warning:
 "... error.css” was blocked due to MIME type (“text/html”) mismatch (X-Content-Type-Options: nosniff).

The warning is right; the contents are html not css.   The functional implications are trivial but the warning is can be disconcerting for clients.

[Bruce]

do you have an error.css file in your styles folder? I'm guessing the response was a 404 error, which is HTML.

[CaseyR]

Thanks, Bruce

You are probably right. But it leads to another question I will post separately.