The stylesheet <snip>/src/course-home/outline-tab/LmsHtmlFragment.css was not loaded because its MIME type, “text/html”, is not “text/css”

This is not super important to me since I can’t tell what difference it’s making in the UI, but as I was trying to see what kind of errors the browser shows for this issue I looked in the Firefox ->Inspect ->Console and saw the following error message.

The stylesheet https://<mysite>/src/course-home/outline-tab/LmsHtmlFragment.css was not loaded because its MIME type, “text/html”, is not “text/css”.

Is this something that needs to be addressed?