Comment 6 for bug 1773935

Here is my horizon.log:

[Sun Mar 03 13:53:58.435994 2019] [:error] [pid 17] Login successful for user "admin" using domain "Default", remote address 192.168.100.11.
[Sun Mar 03 13:54:29.642059 2019] [:error] [pid 18] WARNING:root:Use of this 'djano.wsgi' file has been deprecated since the Rocky release in favor of 'wsgi.py' in the 'openstack_dashboard' module. This file is a legacy naming from before Django 1.4 and an importable 'wsgi.py' is now the default. This file will be removed in the T release cycle.
[Sun Mar 03 13:57:03.894746 2019] [:error] [pid 18] Call to list supported extensions failed. This is likely due to a problem communicating with the Nova endpoint. Host Aggregates panel will not be displayed.
[Sun Mar 03 13:57:15.332920 2019] [:error] [pid 19] Unhandled exception in thread started by <function upload at 0x7f8b38c00b90>
[Sun Mar 03 13:57:15.332994 2019] [:error] [pid 19] Traceback (most recent call last):
[Sun Mar 03 13:57:15.333017 2019] [:error] [pid 19] File "/usr/share/openstack-dashboard/openstack_dashboard/api/glance.py", line 545, in upload
[Sun Mar 03 13:57:15.334655 2019] [:error] [pid 19] return glanceclient(request).images.upload(image.id, data)
[Sun Mar 03 13:57:15.335153 2019] [:error] [pid 19] File "/usr/lib/python2.7/site-packages/glanceclient/common/utils.py", line 598, in inner
[Sun Mar 03 13:57:15.335834 2019] [:error] [pid 19] return RequestIdProxy(wrapped(*args, **kwargs))
[Sun Mar 03 13:57:15.336348 2019] [:error] [pid 19] File "/usr/lib/python2.7/site-packages/glanceclient/v2/images.py", line 288, in upload
[Sun Mar 03 13:57:15.337329 2019] [:error] [pid 19] resp, body = self.http_client.put(url, headers=hdrs, data=body)
[Sun Mar 03 13:57:15.345700 2019] [:error] [pid 19] File "/usr/lib/python2.7/site-packages/glanceclient/common/http.py", line 320, in put
[Sun Mar 03 13:57:15.346012 2019] [:error] [pid 19] return self._request('PUT', url, **kwargs)
[Sun Mar 03 13:57:15.346075 2019] [:error] [pid 19] File "/usr/lib/python2.7/site-packages/glanceclient/common/http.py", line 306, in _request
[Sun Mar 03 13:57:15.346196 2019] [:error] [pid 19] resp, body_iter = self._handle_response(resp)
[Sun Mar 03 13:57:15.346223 2019] [:error] [pid 19] File "/usr/lib/python2.7/site-packages/glanceclient/common/http.py", line 126, in _handle_response
[Sun Mar 03 13:57:15.346268 2019] [:error] [pid 19] raise exc.from_response(resp, resp.content)
[Sun Mar 03 13:57:15.346310 2019] [:error] [pid 19] glanceclient.exc.HTTPInternalServerError: 500 Internal Server Error: The server has either erred or is incapable of performing the requested operation. (HTTP 500)

Why this error? I don't understand it! Is there anyone who can help me!?!