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When i try to use the system info on the dashboard after loggin in ,

I am getting a message ....

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Here is the httpd error_log

[Wed Feb 26 16:37:05 2014] [error] Logging out user "admin". [Wed Feb 26 16:37:10 2014] [error] Login successful for user "admin". [Wed Feb 26 16:37:18 2014] [error] Error while rendering table rows. [Wed Feb 26 16:37:18 2014] [error] Traceback (most recent call last): [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/horizon/tables/base.py", line 1358, in get_rows [Wed Feb 26 16:37:18 2014] [error] row = self._meta.row_class(self, datum) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/horizon/tables/base.py", line 438, in __init__ [Wed Feb 26 16:37:18 2014] [error] self.load_cells() [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/horizon/tables/base.py", line 475, in load_cells [Wed Feb 26 16:37:18 2014] [error] data = column.get_data(datum) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/horizon/tables/base.py", line 319, in get_data [Wed Feb 26 16:37:18 2014] [error] data = filter_func(data) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/horizon/utils/filters.py", line 36, in parse_isotime [Wed Feb 26 16:37:18 2014] [error] raise ValueError(e.message) [Wed Feb 26 16:37:18 2014] [error] ValueError: Expecting a string None [Wed Feb 26 16:37:18 2014] [error] Internal Server Error: /dashboard/admin/info/ [Wed Feb 26 16:37:18 2014] [error] Traceback (most recent call last): [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/core/handlers/base.py", line 111, in get_response [Wed Feb 26 16:37:18 2014] [error] response = callback(request, callback_args, *callback_kwargs) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/horizon/decorators.py", line 38, in dec [Wed Feb 26 16:37:18 2014] [error] return view_func(request, args, *kwargs) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/horizon/decorators.py", line 86, in dec [Wed Feb 26 16:37:18 2014] [error] return view_func(request, args, *kwargs) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/horizon/decorators.py", line 54, in dec [Wed Feb 26 16:37:18 2014] [error] return view_func(request, args, *kwargs) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/horizon/decorators.py", line 38, in dec [Wed Feb 26 16:37:18 2014] [error] return view_func(request, args, *kwargs) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/views/generic/base.py", line 48, in view [Wed Feb 26 16:37:18 2014] [error] return self.dispatch(request, args, *kwargs) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/views/generic/base.py", line 69, in dispatch [Wed Feb 26 16:37:18 2014] [error] return handler(request, args, *kwargs) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/horizon/tabs/views.py", line 137, in get [Wed Feb 26 16:37:18 2014] [error] return self.handle_tabbed_response(context["tab_group"], context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/horizon/tabs/views.py", line 57, in handle_tabbed_response [Wed Feb 26 16:37:18 2014] [error] return self.render_to_response(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/horizon/tabs/views.py", line 70, in render_to_response [Wed Feb 26 16:37:18 2014] [error] response.render() [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/response.py", line 104, in render [Wed Feb 26 16:37:18 2014] [error] self._set_content(self.rendered_content) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/response.py", line 81, in rendered_content [Wed Feb 26 16:37:18 2014] [error] content = template.render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 140, in render [Wed Feb 26 16:37:18 2014] [error] return self._render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 134, in _render [Wed Feb 26 16:37:18 2014] [error] return self.nodelist.render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 823, in render [Wed Feb 26 16:37:18 2014] [error] bit = self.render_node(node, context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 837, in render_node [Wed Feb 26 16:37:18 2014] [error] return node.render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/loader_tags.py", line 123, in render [Wed Feb 26 16:37:18 2014] [error] return compiled_parent._render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 134, in _render [Wed Feb 26 16:37:18 2014] [error] return self.nodelist.render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 823, in render [Wed Feb 26 16:37:18 2014] [error] bit = self.render_node(node, context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 837, in render_node [Wed Feb 26 16:37:18 2014] [error] return node.render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/loader_tags.py", line 62, in render [Wed Feb 26 16:37:18 2014] [error] result = block.nodelist.render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 823, in render [Wed Feb 26 16:37:18 2014] [error] bit = self.render_node(node, context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 837, in render_node [Wed Feb 26 16:37:18 2014] [error] return node.render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/loader_tags.py", line 62, in render [Wed Feb 26 16:37:18 2014] [error] result = block.nodelist.render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 823, in render [Wed Feb 26 16:37:18 2014] [error] bit = self.render_node(node, context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 837, in render_node [Wed Feb 26 16:37:18 2014] [error] return node.render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 874, in render [Wed Feb 26 16:37:18 2014] [error] output = self.filter_expression.resolve(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 571, in resolve [Wed Feb 26 16:37:18 2014] [error] obj = self.var.resolve(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 721, in resolve [Wed Feb 26 16:37:18 2014] [error] value = self._resolve_lookup(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 772, in _resolve_lookup [Wed Feb 26 16:37:18 2014] [error] current = current() [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/horizon/tabs/base.py", line 173, in render [Wed Feb 26 16:37:18 2014] [error] return render_to_string(self.template_name, {"tab_group": self}) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/loader.py", line 171, in render_to_string [Wed Feb 26 16:37:18 2014] [error] return t.render(Context(dictionary)) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 140, in render [Wed Feb 26 16:37:18 2014] [error] return self._render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 134, in _render [Wed Feb 26 16:37:18 2014] [error] return self.nodelist.render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 823, in render [Wed Feb 26 16:37:18 2014] [error] bit = self.render_node(node, context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 837, in render_node [Wed Feb 26 16:37:18 2014] [error] return node.render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/defaulttags.py", line 478, in render [Wed Feb 26 16:37:18 2014] [error] output = self.nodelist.render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 823, in render [Wed Feb 26 16:37:18 2014] [error] bit = self.render_node(node, context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 837, in render_node [Wed Feb 26 16:37:18 2014] [error] return node.render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/defaulttags.py", line 282, in render [Wed Feb 26 16:37:18 2014] [error] return nodelist.render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 823, in render [Wed Feb 26 16:37:18 2014] [error] bit = self.render_node(node, context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 837, in render_node [Wed Feb 26 16:37:18 2014] [error] return node.render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/defaulttags.py", line 193, in render [Wed Feb 26 16:37:18 2014] [error] nodelist.append(node.render(context)) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 874, in render [Wed Feb 26 16:37:18 2014] [error] output = self.filter_expression.resolve(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 571, in resolve [Wed Feb 26 16:37:18 2014] [error] obj = self.var.resolve(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 721, in resolve [Wed Feb 26 16:37:18 2014] [error] value = self._resolve_lookup(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 772, in _resolve_lookup [Wed Feb 26 16:37:18 2014] [error] current = current() [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/horizon/tabs/base.py", line 309, in render [Wed Feb 26 16:37:18 2014] [error] return render_to_string(self.get_template_name(self.request), context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/loader.py", line 171, in render_to_string [Wed Feb 26 16:37:18 2014] [error] return t.render(Context(dictionary)) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 140, in render [Wed Feb 26 16:37:18 2014] [error] return self._render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 134, in _render [Wed Feb 26 16:37:18 2014] [error] return self.nodelist.render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 823, in render [Wed Feb 26 16:37:18 2014] [error] bit = self.render_node(node, context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 837, in render_node [Wed Feb 26 16:37:18 2014] [error] return node.render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 874, in render [Wed Feb 26 16:37:18 2014] [error] output = self.filter_expression.resolve(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 571, in resolve [Wed Feb 26 16:37:18 2014] [error] obj = self.var.resolve(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 721, in resolve [Wed Feb 26 16:37:18 2014] [error] value = self._resolve_lookup(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 772, in _resolve_lookup [Wed Feb 26 16:37:18 2014] [error] current = current() [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/horizon/tables/base.py", line 1019, in render [Wed Feb 26 16:37:18 2014] [error] return table_template.render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 140, in render [Wed Feb 26 16:37:18 2014] [error] return self._render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 134, in _render [Wed Feb 26 16:37:18 2014] [error] return self.nodelist.render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 823, in render [Wed Feb 26 16:37:18 2014] [error] bit = self.render_node(node, context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 837, in render_node [Wed Feb 26 16:37:18 2014] [error] return node.render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/defaulttags.py", line 478, in render [Wed Feb 26 16:37:18 2014] [error] output = self.nodelist.render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 823, in render [Wed Feb 26 16:37:18 2014] [error] bit = self.render_node(node, context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 837, in render_node [Wed Feb 26 16:37:18 2014] [error] return node.render(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/defaulttags.py", line 476, in render [Wed Feb 26 16:37:18 2014] [error] self.extra_context.iteritems()]) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 571, in resolve [Wed Feb 26 16:37:18 2014] [error] obj = self.var.resolve(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 721, in resolve [Wed Feb 26 16:37:18 2014] [error] value = self._resolve_lookup(context) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/django/template/base.py", line 772, in _resolve_lookup [Wed Feb 26 16:37:18 2014] [error] current = current() [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/horizon/tables/base.py", line 1358, in get_rows [Wed Feb 26 16:37:18 2014] [error] row = self._meta.row_class(self, datum) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/horizon/tables/base.py", line 438, in __init__ [Wed Feb 26 16:37:18 2014] [error] self.load_cells() [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/horizon/tables/base.py", line 475, in load_cells [Wed Feb 26 16:37:18 2014] [error] data = column.get_data(datum) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/horizon/tables/base.py", line 319, in get_data [Wed Feb 26 16:37:18 2014] [error] data = filter_func(data) [Wed Feb 26 16:37:18 2014] [error] File "/usr/lib/python2.6/site-packages/horizon/utils/filters.py", line 36, in parse_isotime [Wed Feb 26 16:37:18 2014] [error] raise ValueError(e.message) [Wed Feb 26 16:37:18 2014] [error] TemplateSyntaxError: Expecting a string None