Once i login dashboard using the username and password i get server error as:

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Since IP=192.168.56.29 and controller=varsha, /etc/openstack-dashboard/local_settings.py has: ALLOWED_HOSTS = ['localhost', '192.168.56.29'] OPENSTACK_HOST = "varsha"

error.log file in /var/log/apache2 has:

[Sat Feb 07 14:14:40.741786 2015] [:error] [pid 3044:tid 139994316187392] Internal Server Error: /horizon/admin/
[Sat Feb 07 14:14:40.741841 2015] [:error] [pid 3044:tid 139994316187392] Traceback (most recent call last):
[Sat Feb 07 14:14:40.741852 2015] [:error] [pid 3044:tid 139994316187392]   File "/usr/lib/python2.7/dist-packages/django/core/handlers/base.py", line 112, in get_response
[Sat Feb 07 14:14:40.741861 2015] [:error] [pid 3044:tid 139994316187392]     response = wrapped_callback(request, *callback_args, **callback_kwargs)
[Sat Feb 07 14:14:40.741868 2015] [:error] [pid 3044:tid 139994316187392]   File "/usr/lib/python2.7/dist-packages/horizon/decorators.py", line 38, in dec
[Sat Feb 07 14:14:40.741876 2015] [:error] [pid 3044:tid 139994316187392]     return view_func(request, *args, **kwargs)
[Sat Feb 07 14:14:40.741883 2015] [:error] [pid 3044:tid 139994316187392]   File "/usr/lib/python2.7/dist-packages/horizon/decorators.py", line 86, in dec
[Sat Feb 07 14:14:40.741891 2015] [:error] [pid 3044:tid 139994316187392]     return view_func(request, *args, **kwargs)
[Sat Feb 07 14:14:40.741898 2015] [:error] [pid 3044:tid 139994316187392]   File "/usr/lib/python2.7/dist-packages/horizon/decorators.py", line 54, in dec
[Sat Feb 07 14:14:40.741905 2015] [:error] [pid 3044:tid 139994316187392]     return view_func(request, *args, **kwargs)
[Sat Feb 07 14:14:40.741912 2015] [:error] [pid 3044:tid 139994316187392]   File "/usr/lib/python2.7/dist-packages/horizon/decorators.py", line 38, in dec
[Sat Feb 07 14:14:40.741919 2015] [:error] [pid 3044:tid 139994316187392]     return view_func(request, *args, **kwargs)
[Sat Feb 07 14:14:40.741926 2015] [:error] [pid 3044:tid 139994316187392]   File "/usr/lib/python2.7/dist-packages/horizon/decorators.py", line 86, in dec
[Sat Feb 07 14:14:40.741933 2015] [:error] [pid 3044:tid 139994316187392]     return view_func(request, *args, **kwargs)
[Sat Feb 07 14:14:40.741940 2015] [:error] [pid 3044:tid 139994316187392]   File "/usr/lib/python2.7/dist-packages/django/views/generic/base.py", line 69, in view
[Sat Feb 07 14:14:40.741948 2015] [:error] [pid 3044:tid 139994316187392]     return self.dispatch(request, *args, **kwargs)
[Sat Feb 07 14:14:40.741955 2015] [:error] [pid 3044:tid 139994316187392]   File "/usr/lib/python2.7/dist-packages/django/views/generic/base.py", line 87, in dispatch
[Sat Feb 07 14:14:40.741962 2015] [:error] [pid 3044:tid 139994316187392]     return handler(request, *args, **kwargs)
[Sat Feb 07 14:14:40.741969 2015] [:error] [pid 3044:tid 139994316187392]   File "/usr/lib/python2.7/dist-packages/horizon/tables/views.py", line 154, in get
[Sat Feb 07 14:14:40.741976 2015] [:error] [pid 3044:tid 139994316187392 ...