macOS Catalina introduced a new option in their printtool command line tool to reset the printing system. Type the following in Terminal:
/System/Library/Frameworks/ApplicationServices.framework/Frameworks/PrintCore.framework/Versions/A/printtool --reset -f
Link:
https://babodee.wordpress.com/2019/11/17/reset-the-macos-printing-system-through-the-command-line/
