There are at least a couple of us who no longer can print with the new Catalina upgrade. Just to give you an insight on how it greatly affects Mac users, here are some excerpts from posts on Apple Discussion pages.
At the moment, the problem is reportedly affecting users who have Mac OS Catalina (version 10.15) and Mojave (version 10.14). It seems to be that the revoked credentials on some versions of old HP driver is causing the issue. The worrying part is, some Mac users deemed it as computer virus infection due to daunting pop-up messages and alerts like “ amework will damage your computer” or ““ hpPostProcessing.bundle will damage your computer”. In recent days, Mac users are complaining of having troubles printing to their HP Printers.