Install libgadu-doc by entering the following commands in the terminal:
sudo apt update sudo apt install libgadu-doc
Description:
Gadu-Gadu protocol library - documentation
Gadu-Gadu is an instant messaging program, very popular in Poland. libgadu is a Gadu-Gadu protocol implementation library. . This package contains the documentation and example programs.
Homepage: http://toxygen.net/libgadu/
Version: 1:1.12.2-3
Section: universe/doc