Install libapache2-mod-auth-openid by entering the following commands in the terminal:
sudo apt update sudo apt install libapache2-mod-auth-openid
Description:
OpenID authentication module for Apache2
mod_auth_openid is an authentication module for Apache2. It handles the functions of an OpenID consumer as specified in the OpenID 2.0 specification.
Homepage: http://findingscience.com/mod_auth_openid/
Version: 0.8-3
Section: universe/web