I called HP support and they were very helpful.

When I contacted the chat service I had to wait in excess of 25 minutes to chat with the rep who then advised he could not handle a server OS and to contact HP Support via Twitter.

Finally, HP support sent a new drum

I called HP support and after diagnosis they sent a new toner cartridge

Going online to HP support and every error has about 5 steps to try that don't work and the final one is to remove the printer, shut everything off, reinstall printer, reconnect to network and see if that helps.