Try launching the Print Spooler service for your HP printer. You can find it on a Windows system, in the “Task Manager”, in particular. Check “Description” in “Services” and then tap on this service. When its functioning is over, you can try printing pages wirelessly. The error 79 should not occur this time.
Even then, if additional assistance is needed to properly understand the cause, please go to: https://www.errorsdoc.com/hp/how-to-fix-79-service-error-code-on-hp-laserjet-pro-400-printer/