2.2.1 stopped working??

Help! I’ve had Audacity for years and it’s always worked beautifully (well, usually.) I have 2.2.1 on a MacBookPro mid-2012 model running OS 10.11.6 and it’s worked FINE up until yesterday - suddenly I get error messages - it won’t open, etc. I tried using my old 1.2.5 and it won’t export mp3 (always a problem with that version) and won’t even open one of my aiff files. What’s happening???

What are they? (exactly and in full)

I’m having the same problem - just noticed during the weekend. I run on MacOS Mojave 10.14.6 and I had been using the latest Audacity -
Screen Shot 2020-09-28 at 8.25.51 PM.jpg

There’s a post here that gives a solution: https://forum.audacityteam.org/t/audacity-cannot-be-opened-because-of-a-problem/56210/6