# Pastebin R9qpjZWz
[Mon Nov 25 21:47:35.288233 2019] [:error] [pid 88] WARNING:magnumclient.common.httpclient:Request returned failure status.
[Mon Nov 25 21:47:35.289046 2019] [:error] [pid 88] error invoking apiclient
[Mon Nov 25 21:47:35.289054 2019] [:error] [pid 88] Traceback (most recent call last):
[Mon Nov 25 21:47:35.289058 2019] [:error] [pid 88]   File "/usr/share/openstack-dashboard/openstack_dashboard/api/rest/utils.py", line 128, in _wrapped
[Mon Nov 25 21:47:35.289062 2019] [:error] [pid 88]     data = function(self, request, *args, **kw)
[Mon Nov 25 21:47:35.289065 2019] [:error] [pid 88]   File "/usr/lib/python2.7/site-packages/magnum_ui/api/rest/magnum.py", line 53, in patch
[Mon Nov 25 21:47:35.289068 2019] [:error] [pid 88]     request, template_id, **params)
[Mon Nov 25 21:47:35.289072 2019] [:error] [pid 88]   File "/usr/lib/python2.7/site-packages/magnum_ui/api/magnum.py", line 146, in cluster_template_update
[Mon Nov 25 21:47:35.289079 2019] [:error] [pid 88]     return magnumclient(request).cluster_templates.update(id, patch)
[Mon Nov 25 21:47:35.290310 2019] [:error] [pid 88]   File "/usr/lib/python2.7/site-packages/magnumclient/v1/basemodels.py", line 118, in update
[Mon Nov 25 21:47:35.290461 2019] [:error] [pid 88]     return self._update(self._path(id), patch)
[Mon Nov 25 21:47:35.290567 2019] [:error] [pid 88]   File "/usr/lib/python2.7/site-packages/magnumclient/common/base.py", line 131, in _update
[Mon Nov 25 21:47:35.290576 2019] [:error] [pid 88]     resp, resp_body = self.api.json_request(method, url, body=body)
[Mon Nov 25 21:47:35.290587 2019] [:error] [pid 88]   File "/usr/lib/python2.7/site-packages/magnumclient/common/httpclient.py", line 233, in json_request
[Mon Nov 25 21:47:35.290591 2019] [:error] [pid 88]     resp, body_iter = self._http_request(url, method, **kwargs)
[Mon Nov 25 21:47:35.290594 2019] [:error] [pid 88]   File "/usr/lib/python2.7/site-packages/magnumclient/common/httpclient.py", line 213, in _http_request
[Mon Nov 25 21:47:35.290597 2019] [:error] [pid 88]     error_json = _extract_error_json(body_str, resp)
[Mon Nov 25 21:47:35.290602 2019] [:error] [pid 88]   File "/usr/lib/python2.7/site-packages/magnumclient/common/httpclient.py", line 63, in _extract_error_json
[Mon Nov 25 21:47:35.290605 2019] [:error] [pid 88]     content_type = resp.headers.get("Content-Type", "")
[Mon Nov 25 21:47:35.290609 2019] [:error] [pid 88] AttributeError: HTTPResponse instance has no attribute 'headers'