Plugins » Katello

After following this guide:https://theforeman.org/plugins/katello/3.3/installation/smart_proxy.html i'm getting this error:

Something went wrong! Check the log for ERROR-level output
  The full log is at /var/log/foreman-installer/foreman-proxy-content.log
/usr/share/katello-installer-base/hooks/post/29-create_package_httpd_conf.rb:13:in `initialize': No such file or directory - /etc/httpd/conf.d/pulp.conf (Errno::ENOENT)
    from /usr/share/katello-installer-base/hooks/post/29-create_package_httpd_conf.rb:13:in `open'
    from /usr/share/katello-installer-base/hooks/post/29-create_package_httpd_conf.rb:13:in `block (5 levels) in load'
    from /usr/share/katello-installer-base/hooks/post/29-create_package_httpd_conf.rb:11:in `each'
    from /usr/share/katello-installer-base/hooks/post/29-create_package_httpd_conf.rb:11:in `block (4 levels) in load'
    from /usr/share/gems/gems/kafo-1.0.5/lib/kafo/hooking.rb:34:in `instance_eval'
    from /usr/share/gems/gems/kafo-1.0.5/lib/kafo/hooking.rb:34:in `block (4 levels) in load'
    from /usr/share/gems/gems/kafo-1.0.5/lib/kafo/hook_context.rb:15:in `instance_exec'
    from /usr/share/gems/gems/kafo-1.0.5/lib/kafo/hook_context.rb:15:in `execute'
    from /usr/share/gems/gems/kafo-1.0.5/lib/kafo/hooking.rb:51:in `block in execute'
    from /usr/share/gems/gems/kafo-1.0.5/lib/kafo/hooking.rb:49:in `each'
    from /usr/share/gems/gems/kafo-1.0.5/lib/kafo/hooking.rb:49:in `execute'
    from /usr/share/gems/gems/kafo-1.0.5/lib/kafo/kafo_configure.rb:455:in `block in run_installation'
    from /usr/share/gems/gems/kafo-1.0.5/lib/kafo/exit_handler.rb:27:in `call'
    from /usr/share/gems/gems/kafo-1.0.5/lib/kafo/exit_handler.rb:27:in `exit'
    from /usr/share/gems/gems/kafo-1.0.5/lib/kafo/kafo_configure.rb:160:in `exit'
    from /usr/share/gems/gems/kafo-1.0.5/lib/kafo/kafo_configure.rb:454:in `run_installation'
    from /usr/share/gems/gems/kafo-1.0.5/lib/kafo/kafo_configure.rb:147:in `execute'
    from /usr/share/gems/gems/clamp-1.0.0/lib/clamp/command.rb:68:in `run'
    from /usr/share/gems/gems/clamp-1.0.0/lib/clamp/command.rb:133:in `run'
    from /usr/share/gems/gems/kafo-1.0.5/lib/kafo/kafo_configure.rb:154:in `run'
    from /usr/sbin/foreman-installer:8:in `<main>'