miss registration

[linzhe01]

ViewDoesNotExist at /login/github/
Could not import registration.views.register. View does not exist in module registration.views.
Request Method: GET
Request URL: http://127.0.0.1:8000/login/github/?next=/core/issue/add/
Django Version: 1.4.10
Exception Type: ViewDoesNotExist
Exception Value:
Could not import registration.views.register. View does not exist in module registration.views.
Exception Location: /usr/local/lib/python2.7/dist-packages/django/core/urlresolvers.py in get_callable, line 101
Python Executable: /usr/bin/python
Python Version: 2.7.4