Okay, so I kept two windows open, one in regular Firefox and one in a incognito Firefox window. The error happened on regular Firefox but not the incognito version. So I'm curious if there is an add-on we're all using that would cause it. I figured if we all had one add-on in common, it'd be an ad blocker so I disabled it, but that didn't help.
Now I am using an older version of Firefox since I'm using Floorp browser, which goes off of Firefox stable and I believe the latest Firefox is quite a bit different than the previous versions, but I can't imagine we're all using an older version.