Can error console popup window be disabled in Firefox 2?

[Nomen]

I figure I'd ask this here, as FF2 is still pretty functional for me for the sites I go to on my Win-98 systems but nowhere else are you going to get FF2 support or interest.

There's a website I hit that always give me the error "n.bind is not a function" and references a particular .js file.

There's a setting in about:config (layout.css.report.errors) that I've changed from True to False but that changed nothing.   

Some suggestions I've found say to disable it through the Web Developer toolbar, but I have no such toolbar installed nor do I see "web developer" under the tools drop-down.

Is there anything I can add to about:config to disable error console popups?

Bonus question:

Because of some mods I've done in my hosts file, I frequently get the "Security error:  Domain Name Mismatch" error window.  Is there any way to disable that?

Edited June 1, 2022 by Nomen