Mac Fatal Error 100005 message

I started getting this message when I opened ProTools and Adobe CC. Those two apps seem to be the only ones affected. So, maybe the problem is there (maybe, maybe not according to some). I'm going to try reinstalling the Mac OS 10.15.7 Catalina, the last version that will support non-subscription PT, ProTools (2019 version. The last without a subscription), and the current Adobe CC. But, before I do I was wondering if anyone else has run across this error message and found a simple way to trace its origin.