Best guess: Ubuntu + Gimp 2.10.12 , that must be Ubuntu 20.04 ( based on Debian bullseye) For online help:
Do you have the gvfs packages installed?
Do you have Edit -> Preferences -> Help System set to Use the online version
A very good one here: http://gimp.linux.it/www/meta/ (11-Nov-2019 42 MB 1000-ish pages indexed, searchable)
Do you have the gvfs packages installed?
Code:
sudo apt install gvfs*
Do you have Edit -> Preferences -> Help System set to Use the online version
Quote:....is there a PDF of the 2.10.12 offline help
A very good one here: http://gimp.linux.it/www/meta/ (11-Nov-2019 42 MB 1000-ish pages indexed, searchable)