Satellite 6.9 Capsule sync fails with error PLP0000: Importer indicated a failed response (Katello::Errors::PulpError)

Issue

• Manual and automated capsule sync fails to complete, generating the following error and traceback on the Satellite server.

  [root@satellite ~]# less /var/log/foreman/production.log
  2022-11-21T17:01:45 [E|bac|] PLP0000: Importer indicated a failed response (Katello::Errors::PulpError)
   | /opt/theforeman/tfm/root/usr/share/gems/gems/katello-3.18.1.46/app/lib/actions/pulp/abstract_async_task.rb:121:in `block in external_task='
   | /opt/theforeman/tfm/root/usr/share/gems/gems/katello-3.18.1.46/app/lib/actions/pulp/abstract_async_task.rb:119:in `each'
   | /opt/theforeman/tfm/root/usr/share/gems/gems/katello-3.18.1.46/app/lib/actions/pulp/abstract_async_task.rb:119:in `external_task='
   | /opt/theforeman/tfm/root/usr/share/gems/gems/dynflow-1.4.8/lib/dynflow/action/polling.rb:100:in `poll_external_task_with_rescue'
   | /opt/theforeman/tfm/root/usr/share/gems/gems/dynflow-1.4.8/lib/dynflow/action/polling.rb:22:in `run'
   | /opt/theforeman/tfm/root/usr/share/gems/gems/dynflow-1.4.8/lib/dynflow/action/cancellable.rb:14:in `run'