openstack undercloud upgrade from OSP 8 to OSP9 fails with httpd service failed to start

Issue

When the undercloud is being updated it can fail starting the httpd service complaining about /usr/share/openstack-dashboard/manage.py compress --force

If the command is executed manually the following output can be ovserverd:

# /usr/bin/python /usr/share/openstack-dashboard/manage.py compress --force
WARNING:root:"dashboards" and "default_dashboard" in (local_)settings is DEPRECATED now and may be unsupported in some future release. The preferred way to specify the order of dashboards and the default dashboard is the pluggable dashboard mechanism (in /usr/share/openstack-dashboard/openstack_dashboard/enabled, /usr/share/openstack-dashboard/openstack_dashboard/local/enabled).
Found 'compress' tags in:
        /usr/lib/python2.7/site-packages/tuskar_ui/infrastructure/templates/infrastructure/overview/index.html
        /usr/lib/python2.7/site-packages/tuskar_ui/infrastructure/templates/infrastructure/overview/undeploy_confirmation.html
        /usr/lib/python2.7/site-packages/tuskar_ui/infrastructure/templates/infrastructure/overview/scale_out.html
        /usr/lib/python2.7/site-packages/tuskar_ui/infrastructure/templates/infrastructure/overview/deploy_confirmation.html
        /usr/lib/python2.7/site-packages/tuskar_ui/infrastructure/templates/infrastructure/_workflow_base.html
        /usr/share/openstack-dashboard/openstack_dashboard/templates/horizon/_conf.html
        /usr/lib/python2.7/site-packages/tuskar_boxes/templates/tuskar_boxes/overview/index.html
        /usr/lib/python2.7/site-packages/tuskar_ui/infrastructure/templates/infrastructure/overview/post_deploy_init.html
        /usr/lib/python2.7/site-packages/tuskar_ui/infrastructure/templates/infrastructure/nodes/register.html
        /usr/lib/python2.7/site-packages/tuskar_ui/infrastructure/templates/infrastructure/_fullscreen_workflow_base.html
        /usr/lib/python2.7/site-packages/tuskar_ui/infrastructure/templates/infrastructure/nodes/index.html
        /usr/share/openstack-dashboard/openstack_dashboard/templates/_stylesheets.html
        /usr/lib/python2.7/site-packages/tuskar_ui/infrastructure/templates/infrastructure/base.html
        /usr/lib/python2.7/site-packages/tuskar_ui/infrastructure/templates/infrastructure/base_detail.html
        /usr/share/openstack-dashboard/openstack_dashboard/templates/horizon/_scripts.html
        /usr/lib/python2.7/site-packages/tuskar_ui/infrastructure/templates/infrastructure/nodes/detail.html
Compressing... CommandError: An error occurred during rendering /usr/lib/python2.7/site-packages/tuskar_ui/infrastructure/templates/infrastructure/overview/index.html: Error evaluating expression:
    $table-bg-accent