Could not complete your request because of a program error - Photoshop 21.0.1 macOS Catalina 10.5.1.

I just recently upgraded Photoshop CC 2020 (v.21.0.1). Upon clicking ANYTHING (open file, import video to frames, play an action, crop image, etc), I get the pop-up, "could not complete your request because of a program error." The application is basically nonfunctional because no matter what I try to do, I get that notification error. Sometimes, I can click out of the pop-up. Sometimes when I click the OK button, the notification will continue to pop up until I force quit out of Photoshop.

I have tried uninstalling and reinstalling, but still no fix. Is there anything else I can do to try to remedy this (both not being able to click anything and the multiple pop-ups)?

For reference, I am running MAC OS Catalina 10.5.1.

{Thread renamed by moderator}