我不知道发生了什么，但突然syncdb停止工作。
当我打电话给“ python manage.py syncdb ”时，我会收到这样的消息：
Creating tables ...
Creating table auth_permission
Creating table auth_group_permissions
Creating table auth_group
Creating table django_content_type
Creating table django_session
Creating table django_site
Creating table django_admin_log
... (my apps)
You just installed Django's auth system, which means you don't have any superusers defined.
Would you like to create one now? (yes/no): yes
Username: m
Email address: m@m.com
First name: m
Last name: m
Password:
Password (again):
DoesNotExist: Group matching query does not exist.
当我打电话给“ python manage.py createsuperuser ”时也一样。
用户已创建，我可以登录，但没有任何权利。我也无法浏览管理页面（显示登录窗口）。什么可能是错的？