Comment 21 for bug 1818629

Similar problem with a Color Laser Jet Pro MFP M477fdw, 18.04, HPLIP 3.19.5.

Managed to install the plugin by downloading the file from HP's Developer portal, and pointing at the file during hp-setup, waiting while it didn't get the key, then installing without it.

At that point, scanning started working, for which the plugin is required, but as soon as the printer was located correctly (on an ethernet cable) the setup failed, saying the device required the plugin. Bizarre, because the printer actually doesn't require the plugin, just the scanning.

I went to the Printer's IP address in a browser and installed it from there via CUPS, works fine.

Removed HP Device Manager from Startup Applications so it doesn't offend my eye sitting at the top of the screen, it'll do for now.