This widget should report errors in txt, html, mhtml, and so on. ❗
Thanks for submitting an idea to the Mozilla Connect community! Your idea is now open to votes (aka kudos) and comments.
Are you familiar with the Firefox Developer Tools? Check out the docs: https://firefox-source-docs.mozilla.org/devtools-user/ or just press F12 and check it out. You might be interested in the tabs: Console, Debugger, and Performance.
never-displayed