Install gir1.2-signon-1.0 by entering the following commands in the terminal:
sudo apt update sudo apt install gir1.2-signon-1.0
Description:
GObject introspection data for the Signon library
This package contains introspection data for the Signon library. . It can be used by packages using the GIRepository format to generate dynamic bindings.
Homepage: http://code.google.com/p/accounts-sso/
Version: 1.14+17.04.20161117-0ubuntu1
Section: universe/introspection