exception about sessions when use cache backends

[jimichan]

############
# SESSIONS #
############

# Whether to save the session data on every request.

SESSION_EXPIRE_AT_BROWSER_CLOSE = True
SESSION_ENGINE = 'django.contrib.sessions.backends.cache'

Traceback (most recent call last):

File "D:\allworkspace\myworkspace\Dhousemap\django\core\servers\basehttp.py", line 277, in run

self.result = application(self.environ, self.start_response)

File "D:\allworkspace\myworkspace\Dhousemap\django\core\servers\basehttp.py", line 634, in call

return self.application(environ, start_response)

File "D:\allworkspace\myworkspace\Dhousemap\django\core\handlers\wsgi.py", line 220, in call

response = middleware_method(request, response)

File "D:\allworkspace\myworkspace\Dhousemap\django\contrib\sessions\middleware.py", line 25, in process_response

if request.session.get_expire_at_browser_close():

File "D:\allworkspace\myworkspace\Dhousemap\django\contrib\sessions\backends\base.py", line 225, in get_expire_at_browser_close

if self.get('_session_expiry') is None:

File "D:\allworkspace\myworkspace\Dhousemap\django\contrib\sessions\backends\base.py", line 63, in get

return self._session.get(key, default)

AttributeError: 'NoneType' object has no attribute 'get'

[jimichan]

i found it be happen when i modify source file

i run server use "manage.py runserver"

[Malcolm Tredinnick]

In future, please provide the steps we need to take to repeat the problem. The traceback alone is very rarely enough to understand what's going on.

In this case, I'm going to guess this is a duplicate of #8351, which I'll be fixing later today.

[Jacob]

Milestone 1.0 deleted