NoReverseMatch: u'about' is not a registered namespace

[geekyouth]

django.core.urlresolvers.NoReverseMatch
NoReverseMatch: u'about' is not a registered namespace

Traceback (most recent call last)
File "/opt/hue/build/env/lib/python2.7/site-packages/Django-1.6.10-py2.7.egg/django/contrib/staticfiles/handlers.py", line 67, in __call__
return self.application(environ, start_response)
File "/opt/hue/build/env/lib/python2.7/site-packages/Django-1.6.10-py2.7.egg/django/core/handlers/wsgi.py", line 206, in __call__
response = self.get_response(request)
File "/opt/hue/build/env/lib/python2.7/site-packages/Django-1.6.10-py2.7.egg/django/core/handlers/base.py", line 194, in get_response
response = self.handle_uncaught_exception(request, resolver, sys.exc_info())
File "/opt/hue/build/env/lib/python2.7/site-packages/Django-1.6.10-py2.7.egg/django/core/handlers/base.py", line 229, in handle_uncaught_exception
return debug.technical_500_response(request, *exc_info)
File "/opt/hue/build/env/lib/python2.7/site-packages/django_extensions-1.5.0-py2.7.egg/django_extensions/management/technical_response.py", line 5, in null_technical_500_response
six.reraise(exc_type, exc_value, tb)
File "/opt/hue/build/env/lib/python2.7/site-packages/Django-1.6.10-py2.7.egg/django/core/handlers/base.py", line 112, in get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/opt/hue/build/env/lib/python2.7/site-packages/Django-1.6.10-py2.7.egg/django/db/transaction.py", line 371, in inner
return func(*args, **kwargs)
File "/opt/hue/desktop/core/src/desktop/views.py", line 304, in index
return redirect(reverse('about:index'))
File "/opt/hue/build/env/lib/python2.7/site-packages/Django-1.6.10-py2.7.egg/django/core/urlresolvers.py", line 532, in reverse
key)
NoReverseMatch: u'about' is not a registered namespace
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