Chicko-PC:~/Downloads$ sh hplip-3.19.5-plugin.run

Verifying archive integrity... All good.

Uncompressing HPLIP 3.19.5 Plugin Self Extracting Archive..............................................................

HP Linux Imaging and Printing System (ver. 3.19.5)
Plugin Installer ver. 3.0

Copyright (c) 2001-18 HP Development Company, LP
This software comes with ABSOLUTELY NO WARRANTY.
This is free software, and you are welcome to distribute it
under certain conditions. See COPYING file for more details.

Plug-in version: 3.19.5
Installed HPLIP version: 3.19.5
Number of files to install: 64

Gtk-Message: 14:44:32.057: Failed to load module "gail"

** (python3:4900): WARNING **: 14:44:32.066: (../atk-adaptor/bridge.c:993):atk_bridge_adaptor_init: runtime check failed: (root)

Done.