Install libgupnp-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libgupnp-doc
Description:
GObject-based library for UPnP (documentation)
A GObject-based API for doing UPnP transparently. . This package contains the documentation.
Homepage: https://wiki.gnome.org/Projects/GUPnP
Version: 1.0.2-2
Section: universe/doc