The puppet cert clean command fails with message Error: header too long in Red Hat Satellite 6

Issue

• The puppet cert clean command fails with following error.

  # puppet cert clean client.example.com
  Warning: `puppet cert` is deprecated and will be removed in a future release.
    (location: /opt/puppetlabs/puppet/lib/ruby/vendor_ruby/puppet/application.rb:370:in `run')
  Error: header too long
  

• While navigating to GUI - > Infrastructure - > Capsule - > satellite\capsule.example.com and clicking on Puppet CA tab, following error is being displayed.

  Failure: ERF50-5345 [Foreman::WrappedException]: Unable to connect ([ProxyAPI::ProxyException]: ERF12-5356 [ProxyAPI::ProxyException]: Unable to get PuppetCA certificates ([RestClient::NotAcceptable]: 406 Not Acceptable) for Capsule https://satellite.example.com:9090/puppet/ca)