SessionAuthenticationMiddleware was removed in Django 2. This middleware should not be used anymore. The server won't even start otherwise.
$ ./src/manage.py runserver
Watching for file changes with StatReloader
Performing system checks...
System check identified no issues (0 silenced).
May 18, 2020 - 00:54:59
Django version 3.0.4, using settings 'dixit.settings'
Starting development server at http://127.0.0.1:8000/
Quit the server with CONTROL-C.
Exception in thread django-main-thread:
Traceback (most recent call last):
File "/Users/remy.suen/code/github/dixit-online/server/venv/lib/python3.7/site-packages/django/utils/module_loading.py", line 20, in import_string
return getattr(module, class_name)
AttributeError: module 'django.contrib.auth.middleware' has no attribute 'SessionAuthenticationMiddleware'
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/Users/remy.suen/code/github/dixit-online/server/venv/lib/python3.7/site-packages/django/core/servers/basehttp.py", line 45, in get_internal_wsgi_application
return import_string(app_path)
File "/Users/remy.suen/code/github/dixit-online/server/venv/lib/python3.7/site-packages/django/utils/module_loading.py", line 17, in import_string
module = import_module(module_path)
File "/usr/local/Cellar/python/3.7.4_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/importlib/__init__.py", line 127, in import_module
return _bootstrap._gcd_import(name[level:], package, level)
File "<frozen importlib._bootstrap>", line 1006, in _gcd_import
File "<frozen importlib._bootstrap>", line 983, in _find_and_load
File "<frozen importlib._bootstrap>", line 967, in _find_and_load_unlocked
File "<frozen importlib._bootstrap>", line 677, in _load_unlocked
File "<frozen importlib._bootstrap_external>", line 728, in exec_module
File "<frozen importlib._bootstrap>", line 219, in _call_with_frames_removed
File "/Users/remy.suen/code/github/dixit-online/server/src/dixit/wsgi.py", line 16, in <module>
application = get_wsgi_application()
File "/Users/remy.suen/code/github/dixit-online/server/venv/lib/python3.7/site-packages/django/core/wsgi.py", line 13, in get_wsgi_application
return WSGIHandler()
File "/Users/remy.suen/code/github/dixit-online/server/venv/lib/python3.7/site-packages/django/core/handlers/wsgi.py", line 127, in __init__
self.load_middleware()
File "/Users/remy.suen/code/github/dixit-online/server/venv/lib/python3.7/site-packages/django/core/handlers/base.py", line 35, in load_middleware
middleware = import_string(middleware_path)
File "/Users/remy.suen/code/github/dixit-online/server/venv/lib/python3.7/site-packages/django/utils/module_loading.py", line 24, in import_string
) from err
ImportError: Module "django.contrib.auth.middleware" does not define a "SessionAuthenticationMiddleware" attribute/class
The above exception was the direct cause of the following exception:
Traceback (most recent call last):
File "/usr/local/Cellar/python/3.7.4_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/threading.py", line 926, in _bootstrap_inner
self.run()
File "/usr/local/Cellar/python/3.7.4_1/Frameworks/Python.framework/Versions/3.7/lib/python3.7/threading.py", line 870, in run
self._target(*self._args, **self._kwargs)
File "/Users/remy.suen/code/github/dixit-online/server/venv/lib/python3.7/site-packages/django/utils/autoreload.py", line 53, in wrapper
fn(*args, **kwargs)
File "/Users/remy.suen/code/github/dixit-online/server/venv/lib/python3.7/site-packages/django/core/management/commands/runserver.py", line 137, in inner_run
handler = self.get_handler(*args, **options)
File "/Users/remy.suen/code/github/dixit-online/server/venv/lib/python3.7/site-packages/django/contrib/staticfiles/management/commands/runserver.py", line 27, in get_handler
handler = super().get_handler(*args, **options)
File "/Users/remy.suen/code/github/dixit-online/server/venv/lib/python3.7/site-packages/django/core/management/commands/runserver.py", line 64, in get_handler
return get_internal_wsgi_application()
File "/Users/remy.suen/code/github/dixit-online/server/venv/lib/python3.7/site-packages/django/core/servers/basehttp.py", line 50, in get_internal_wsgi_application
) from err
django.core.exceptions.ImproperlyConfigured: WSGI application 'dixit.wsgi.application' could not be loaded; Error importing module.
SessionAuthenticationMiddlewarewas removed in Django 2. This middleware should not be used anymore. The server won't even start otherwise.