python - Django: "No module named context_processors" error after reboot

Question

I have a Django site that works on my PC, and was working briefly on my server after loading it on. I noticed my server had Django 1.6 and I upgraded to 1.8.

After rebooting, none of the pages on my site load and I get the error:

ImportError No module named context_processors

I read through the docs on Django and allauth. Django mentions that in 1.8 the context_processors moved and allauth says specific allauth tags are no longer needed in the TEMPLATE_CONTEXT_PROCESSORS of settings.py.

Django: https://docs.djangoproject.com/en/1.8/ref/settings/

Allauth: https://django-allauth.readthedocs.org/en/latest/installation.html

Anyone else run into this? Am I on the right track? Do I need to change something in settings? I can't really tell if it's a Django or allauth issue so not sure where to start.

Any help is appreciated!

Traceback:

Django Version: 1.8.4
Python Version: 2.7.6
Installed Applications:
('django.contrib.admin',
 'django.contrib.auth',
 'django.contrib.contenttypes',
 'django.contrib.sessions',
 'django.contrib.messages',
 'django.contrib.staticfiles',
 'plant',
 'journal',
 'userimg',
 'django.contrib.sites',
 'allauth',
 'allauth.account')
Installed Middleware:
('django.contrib.sessions.middleware.SessionMiddleware',
 'django.middleware.common.CommonMiddleware',
 'django.middleware.csrf.CsrfViewMiddleware',
 'django.contrib.auth.middleware.AuthenticationMiddleware',
 'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
 'django.contrib.messages.middleware.MessageMiddleware',
 'django.middleware.clickjacking.XFrameOptionsMiddleware')


Traceback:
File "/usr/local/lib/python2.7/dist-packages/Django-1.8.4-py2.7.egg/django/core/handlers/base.py" in get_response
  132.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/django/django_project/plant/views.py" in plant_main
  24.     return render(request, 'plant/plant_main.html', context)
File "/usr/local/lib/python2.7/dist-packages/Django-1.8.4-py2.7.egg/django/shortcuts.py" in render
  67.             template_name, context, request=request, using=using)
File "/usr/local/lib/python2.7/dist-packages/Django-1.8.4-py2.7.egg/django/template/loader.py" in render_to_string
  99.         return template.render(context, request)
File "/usr/local/lib/python2.7/dist-packages/Django-1.8.4-py2.7.egg/django/template/backends/django.py" in render
  74.         return self.template.render(context)
File "/usr/local/lib/python2.7/dist-packages/Django-1.8.4-py2.7.egg/django/template/base.py" in render
  208.                 with context.bind_template(self):
File "/usr/lib/python2.7/contextlib.py" in __enter__
  17.             return self.gen.next()
File "/usr/local/lib/python2.7/dist-packages/Django-1.8.4-py2.7.egg/django/template/context.py" in bind_template
  237.         processors = (template.engine.template_context_processors +
File "/usr/local/lib/python2.7/dist-packages/Django-1.8.4-py2.7.egg/django/utils/functional.py" in __get__
  60.         res = instance.__dict__[self.name] = self.func(instance)
File "/usr/local/lib/python2.7/dist-packages/Django-1.8.4-py2.7.egg/django/template/engine.py" in template_context_processors
  90.         return tuple(import_string(path) for path in context_processors)
File "/usr/local/lib/python2.7/dist-packages/Django-1.8.4-py2.7.egg/django/template/engine.py" in <genexpr>
  90.         return tuple(import_string(path) for path in context_processors)
File "/usr/local/lib/python2.7/dist-packages/Django-1.8.4-py2.7.egg/django/utils/module_loading.py" in import_string
  26.     module = import_module(module_path)
File "/usr/lib/python2.7/importlib/__init__.py" in import_module
  37.     __import__(name)

Exception Type: ImportError at /plant/
Exception Value: No module named context_processors

Answer 1

I encountered the same problem but I am upgrading from 1.9.1 to 1.10. I found there's a little difference in the settings.

This is the code from 1.9.1

TEMPLATES = [
{
    'BACKEND': 'django.template.backends.django.DjangoTemplates',
    'DIRS': [os.path.join(BASE_DIR, 'templates')],
    'APP_DIRS': True,
    'OPTIONS': {
        'context_processors': [
            'django.template.context_processors.debug',
            'django.template.context_processors.request',
            'django.core.context_processors.request',
            'django.contrib.auth.context_processors.auth',
            'django.contrib.messages.context_processors.messages',
        ],
    },
},
]

This is code for 1.10

TEMPLATES = [
{
    'BACKEND': 'django.template.backends.django.DjangoTemplates',
    'DIRS': [os.path.join(BASE_DIR, 'templates')],
    'APP_DIRS': True,
    'OPTIONS': {
        'context_processors': [
            'django.template.context_processors.debug',
            'django.template.context_processors.request',
            'django.contrib.auth.context_processors.auth',
            'django.contrib.messages.context_processors.messages',
        ],
    },
},
]

The line django.core.context_processors.request is not valid in 1.10. Remove it and the code works well.