Help. 
I have an HP 5820 Deskjet. It looks like I have set it up completely. I can print. It says print job successful. The printer blinks, but just keeps on blinking.
I dual boot with Linux Mint and I can print there no problem.
Here is the log:
May 30 11:41:14 nixos cupsd[1056]: [Job 23] Adding start banner page “none”.
May 30 11:41:14 nixos cupsd[1056]: [Job 23] Queued on “HP_DeskJet_5820_series” by “root”.
May 30 11:41:14 nixos cupsd[1056]: REQUEST localhost - - "POST /printers/HP_DeskJet_5820_series HTT>
May 30 11:41:14 nixos cupsd[1056]: [Job 23] File of type text/plain queued by “root”.
May 30 11:41:14 nixos cupsd[1056]: [Job 23] Adding end banner page “none”.
May 30 11:41:14 nixos cupsd[1056]: [Job 23] Started filter /nix/store/czsasy5mzmzzajc314r6ra090crvg>
May 30 11:41:14 nixos cupsd[1056]: [Job 23] Started filter /nix/store/czsasy5mzmzzajc314r6ra090crvg>
May 30 11:41:14 nixos cupsd[1056]: [Job 23] Started backend /nix/store/czsasy5mzmzzajc314r6ra090crv>
May 30 11:41:14 nixos cupsd[1056]: REQUEST localhost - - "POST /printers/HP_DeskJet_5820_series HTT>
May 30 11:41:15 nixos cupsd[1056]: HP_DeskJet_5820_series root 23 [30/May/2025:11:41:15 +0800] tota>
May 30 11:41:15 nixos cupsd[1056]: [Job 23] Job completed.
May 30 11:41:45 nixos cupsd[1056]: Saving job.cache…
May 30 11:41:45 nixos cupsd[1056]: Saving subscriptions.conf…
lines 3916-3950/3950 (END)