Comment 4 for bug 1777834

I can confirm this issue on Openstack Queens when try to modify any image properties without metadata change.

# rpm -qa | grep -i horizon
puppet-horizon-12.4.0-1.el7.noarch
python-django-horizon-13.0.2-1.el7.noarch

2019-07-05 01:56:38,030 21836 ERROR openstack_dashboard.api.rest.utils error invoking apiclient
Traceback (most recent call last):
  File "/usr/share/openstack-dashboard/openstack_dashboard/api/rest/utils.py", line 130, in _wrapped
    data = function(self, request, *args, **kw)
  File "/usr/share/openstack-dashboard/openstack_dashboard/api/rest/glance.py", line 110, in patch
    **request.DATA['updated']
KeyError: 'updated'

Also I can confirm this issue is gone on Rocky and later release. Which fixed by this ticket: https://bugs.launchpad.net/horizon/+bug/1779879