要解决这个问题，请转到 settings.py 那里有新样式的 MIDDLEWARE(在 Django 中引入)1.10)

To resolve this go to settings.py where there is new-style MIDDLEWARE (introduced in Django 1.10)

将其更改为旧式MIDDLEWARE_CLASSES

https://docs.djangoproject.com/en/stable/topics/http/middleware/#upgrading-pre-django-1-10-style-middleware