RandyJoe wrote:
Once again, having just upgraded to Mac OS 10.15.4, attempting to print a PDF's from my bank, the printer spits out the error message above. Month's ago, I deleted something and it took care of the problem, but I don't recall just what I did. Can someone remind me?
Printer / AirPrint
Printers/scanners are typically the first causality in upgrading any OS.
If it is listed as AirPrint printer, delete the existing printer in
> System Preferences> Printers & Scanners, and add it again, select AirPrint.
Connect an AirPrint printer to a Wi-Fi network - Apple Support.
https://support.apple.com/en-us/HT201900
about AirPrint
https://support.apple.com/en-us/HT201311
you can also try reset print system if necessary:
If you can't print from your Mac or iOS device - Apple Support
https://support.apple.com/en-us/HT203343
If this fails you— from the browser interface you can interact with CUPS directly:
CUPS management http://localhost:631/admin/
if you see no interface then from the Terminal.app simply enter this command line, copy&paste :
cupsctl WebInterface=yes
and try again the local link.