Install ruby-openssl by entering the following commands in the terminal:
sudo apt update sudo apt install ruby-openssl
Description:
Ruby bindings for OpenSSL
This package provides SSL, TLS and general purpose cryptography for Ruby by wrapping the OpenSSL library. It used to be bundled with the Ruby interpreter, but has been extracted to a standalone package.
Homepage: https://www.ruby-lang.org/
Version: 2.0.5-1build3
Section: universe/ruby