I ran into this same problem, 'Filter failed', yesterday. Came out of nowhere...printer was working on Catalina too.I wish I could tell you how I fixed this, but I spent so much time on it, and tried so many different things, I just don't know what ...
I updated to Catalina and my MG6320 still works but I had a problem. First, I have it ethernet connected, not over WiFi. I am running the CUPS driver v16.20.0.0 from the canon website. The problem I ran into was that the printer dialog box no longer...
