Install libpam-ufpidentity by entering the following commands in the terminal:
sudo apt update sudo apt install libpam-ufpidentity
PAM library for UFP identity
The UFP Identity PAM module provides integration of the UFP Identity service into your existing user authentication infrastructure. PAM is used by Linux/BSD, Solaris and Mac OS X for user authentication to various services such as SSH, login, and sudo. See https://github.com/ufpidentity/pam_ufpidentity/blob/master/README.md for details about installation.