Install libpolkit-backend-1-dev by entering the following commands in the terminal:
sudo apt update sudo apt install libpolkit-backend-1-dev
Description:
PolicyKit backend API - development files
PolicyKit is a toolkit for defining and handling the policy that allows unprivileged processes to speak to privileged processes. . This package contains the development files for the library found in libpolkit-backend-1-0.
Homepage: https://www.freedesktop.org/wiki/Software/polkit/
Version: 0.105-20
Section: libdevel