Can you try using openstack-dashboard from ocata-proposed? You may have picked up rc1 of openstack-dashboard which we haven't tested yet.
I don't see us backporting openstack-dashboard updates to Newton unfortunately because there were significant changes required.
I switched user:group from horizon to www-data to align openstack-dashboard with the all of the additional dashboards use (most of which we pick up from debian). The additional dashboards, such as murano-dashboard, change the user:group to www-data.
Can you try using openstack-dashboard from ocata-proposed? You may have picked up rc1 of openstack-dashboard which we haven't tested yet.
I don't see us backporting openstack-dashboard updates to Newton unfortunately because there were significant changes required.
I switched user:group from horizon to www-data to align openstack-dashboard with the all of the additional dashboards use (most of which we pick up from debian). The additional dashboards, such as murano-dashboard, change the user:group to www-data.