Rubygen unable to install from normal repository

**Problem:see image capture

**Expected outcome:installation of foreman setup successfull

Foreman and Proxy versions:

Foreman and Proxy plugin versions:

**Distribution and version:OL7

Other relevant data:

Erreur : Paquet : rubygem-kafo-4.0.1-1.el7.noarch (foreman)
Requiert : rubygem(ansi)
Erreur : Paquet : 1:foreman-installer-2.0.0-1.el7.noarch (foreman)
Requiert : puppet-agent >= 5.5.10
Erreur : Paquet : 1:foreman-installer-2.0.0-1.el7.noarch (foreman)
Requiert : /opt/puppetlabs/puppet/bin/ruby