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[Radomir Dopieralski <1671604@xxxxxxxxxxxxxxxxxx>]

** Changed in: horizon
       Status: In Progress => Invalid

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https://bugs.launchpad.net/bugs/1671604

Title:
  KeyError with Volumes panel

Status in OpenStack Dashboard (Horizon):
  Invalid

Bug description:
  Horizon now raises this error:

  Traceback (most recent call last):
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/core/handlers/base.py", line 164, in get_response
      response = response.render()
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/response.py", line 158, in render
      self.content = self.rendered_content
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/response.py", line 135, in rendered_content
      content = template.render(context, self._request)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/backends/django.py", line 74, in render
      return self.template.render(context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/base.py", line 210, in render
      return self._render(context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/base.py", line 202, in _render
      return self.nodelist.render(context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/base.py", line 905, in render
      bit = self.render_node(node, context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/debug.py", line 79, in render_node
      return node.render(context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/loader_tags.py", line 135, in render
      return compiled_parent._render(context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/base.py", line 202, in _render
      return self.nodelist.render(context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/base.py", line 905, in render
      bit = self.render_node(node, context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/debug.py", line 79, in render_node
      return node.render(context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/loader_tags.py", line 65, in render
      result = block.nodelist.render(context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/base.py", line 905, in render
      bit = self.render_node(node, context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/debug.py", line 79, in render_node
      return node.render(context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/loader_tags.py", line 65, in render
      result = block.nodelist.render(context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/base.py", line 905, in render
      bit = self.render_node(node, context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/debug.py", line 79, in render_node
      return node.render(context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/loader_tags.py", line 159, in render
      return template.render(context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/base.py", line 212, in render
      return self._render(context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/base.py", line 202, in _render
      return self.nodelist.render(context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/base.py", line 905, in render
      bit = self.render_node(node, context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/debug.py", line 79, in render_node
      return node.render(context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/base.py", line 1273, in render
      _dict = func(*resolved_args, **resolved_kwargs)
    File "/home/rdopiera/dev/horizon/horizon/templatetags/horizon.py", line 67, in horizon_nav
      panel_groups = dash.get_panel_groups()
    File "/home/rdopiera/dev/horizon/horizon/base.py", line 502, in get_panel_groups
      registered.pop(panel.__class__)
  KeyError: <class 'openstack_dashboard.dashboards.project.volumes.panel.Volumes'>

  In addition, Django fails to display this properly, raising:

  Traceback (most recent call last):
    File "/usr/lib64/python2.7/wsgiref/handlers.py", line 85, in run
      self.result = application(self.environ, self.start_response)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/contrib/staticfiles/handlers.py", line 63, in __call__
      return self.application(environ, start_response)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/core/handlers/wsgi.py", line 189, in __call__
      response = self.get_response(request)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/core/handlers/base.py", line 218, in get_response
      response = self.handle_uncaught_exception(request, resolver, sys.exc_info())
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/core/handlers/base.py", line 261, in handle_uncaught_exception
      return debug.technical_500_response(request, *exc_info)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/views/debug.py", line 97, in technical_500_response
      html = reporter.get_traceback_html()
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/views/debug.py", line 384, in get_traceback_html
      return t.render(c)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/base.py", line 210, in render
      return self._render(context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/base.py", line 202, in _render
      return self.nodelist.render(context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/base.py", line 905, in render
      bit = self.render_node(node, context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/debug.py", line 79, in render_node
      return node.render(context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/defaulttags.py", line 329, in render
      return nodelist.render(context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/base.py", line 905, in render
      bit = self.render_node(node, context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/debug.py", line 79, in render_node
      return node.render(context)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/template/debug.py", line 92, in render
      output = force_text(output)
    File "/home/rdopiera/dev/horizon/.tox/py27/lib/python2.7/site-packages/django/utils/encoding.py", line 92, in force_text
      s = six.text_type(s)
  TypeError: coercing to Unicode: need string or buffer, __proxy__ found

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