Minor update fails with Error: Duplicate declaration: Nova_config[DEFAULT/my_ip] in Red Hat OpenStack Platform 8

Issue

Minor update fails with Error: Duplicate declaration: Nova_config[DEFAULT/my_ip] in Red Hat OpenStack Platform 8.

openstack stack failures list --long shows:

"deploy_stderr": "version', resolution='<anonymous>': undefined method `[]' for nil:NilClass\nCould not retrieve fact='apache_version', resolution='<anonymous>': undefined method `[]' for nil:NilClass\n\u001b[1;31mWarning: Scope(Class[Nova::Vncproxy::Common]): Could not look up qualified variable '::nova::vncproxy::host'; class ::nova::vncproxy has not been evaluated\u001b[0m\n\u001b[1;31mWarning: Scope(Class[Nova::Vncproxy::Common]): Could not look up qualified variable '::nova::vncproxy::vncproxy_protocol'; class ::nova::vncproxy has not been evaluated\u001b[0m\n\u001b[1;31mWarning: Scope(Class[Nova::Vncproxy::Common]): Could not look up qualified variable '::nova::vncproxy::port'; class ::nova::vncproxy has not been evaluated\u001b[0m\n\u001b[1;31mWarning: Scope(Class[Nova::Vncproxy::Common]): Could not look up qualified variable '::nova::vncproxy::vncproxy_path'; class ::nova::vncproxy has not been evaluated\u001b[0m\n\u001b[1;31mError: Duplicate declaration: Nova_config[DEFAULT/my_ip] is already declared in file /etc/puppet/modules/nova/manifests/init.pp:696; cannot redeclare at /var/lib/heat-config/heat-config-puppet/f7691da3-5f69-4fa0-abee-f751eb0a7f07.pp:113 on node (...)\u001b[0m\n\u001b[1;31mError: Duplicate declaration: Nova_config[DEFAULT/my_ip] is already declared in file /etc/puppet/modules/nova/manifests/init.pp:696; cannot redeclare at /var/lib/heat-config/heat-config-puppet/f7691da3-5f69-4fa0-abee-f751eb0a7f07.pp:113 on node (...)\u001b[0m\n",