"MacBook Pro printing to PDF stuck in 'trying to print' loop"
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Thank you for the followup reply.
Thank you for the screenshot.
Q1. "As soon as someone says what app am I using I think they are always using iOS. I don't know anything about GUI. I am using a canon printer."
A1. GUI: Acronym for Graphical User Interface/ It contains all the images and layout of screen, form the iOS to an app. For Google: define:graphical user interface
Q2. "[...]I feel like I am at the equivalent of trignomentry and you're answering me in Calculus. All I know is this all worked until I uploaded Tahoe.[...]"
A2. First off, I would know NOTHING of your tech skills, and taking part in this forum is nothing of a pre-requisite for Calculus, for that matter.
Boot in Safe Mode: Start up your Mac in Safe Mode - Apple Support. In Safe Mode, Login Items do not run at login, certain preferences are set aside, and damaged system files are then reset. So, once booted in to Safe Mode, wait 30 seconds, and then boot up normally, attempting another update install.
Q3. "Once I have opted to do a print> I got the second graphic"
A3. It would seem to me that you are in a loop. As for the application, is this occurring in only certain apps or, is it the entire macOS?