Install ruby-public-suffix by entering the following commands in the terminal:
sudo apt update sudo apt install ruby-public-suffix
Description:
Domain name parser based on the Public Suffix List
PublicSuffix can parse and decompose a domain name into top level domain, domain and subdomains.
Homepage: https://simonecarletti.com/code/publicsuffix-ruby
Version: 2.0.5-1
Section: universe/ruby