Thank you for the report and I am very sorry for the issue!
I believe the machine was upgraded to Catalina, then the error starts to appear, is that correct?
Unfortunately, we have never encountered this error before. I'm wondering whether this happens immediately after starting Archicad 24, or do you need to start a new file/open an existing file for it to happen?
Have you tried to reinstall Archicad also?
It must be the application name change. I couldn't give Full Disk Access permissions to both USA and INT versions with both named Archicad.app. The whole experience was so painful that I don't think I want to try restoring their names, at least until I have a lot of time to spend on this without again hurting work schedules.
AC 24 USA/INT, MacBook Pro 2.7 Quad - OS 10.15.7