I'm upgrading from Django 1.11 to Django 2.0 and getting the following
error trying to load any page:
Internal Server Error: /favicon.ico
Traceback (most recent call last):
File
"/home/andrew/projects/healthmatters/website/env/lib/python3.5/site-packages/django/core/handlers/exception.py",
line 35, in inner
response = get_response(request)
File
"/home/andrew/projects/healthmatters/website/env/lib/python3.5/site-packages/django/utils/deprecation.py",
line 97, in __call__
response = self.process_response(request, response)
File
"/home/andrew/projects/healthmatters/website/env/lib/python3.5/site-packages/django/middleware/clickjacking.py",
line 26, in process_response
if response.get('X-Frame-Options') is not None:
AttributeError: 'NoneType' object has no attribute 'get'
[21/Dec/2017 15:19:10] "GET /favicon.ico HTTP/1.1" 500 74215
Or, if I disable that middleware, I get this:
Internal Server Error: /favicon.ico
Traceback (most recent call last):
File
"/home/andrew/projects/healthmatters/website/env/lib/python3.5/site-packages/django/core/handlers/exception.py",
line 35, in inner
response = get_response(request)
File
"/home/andrew/projects/healthmatters/website/env/lib/python3.5/site-packages/django/utils/deprecation.py",
line 97, in __call__
response = self.process_response(request, response)
File
"/home/andrew/projects/healthmatters/website/env/lib/python3.5/site-packages/django/contrib/sessions/middleware.py",
line 45, in process_response
patch_vary_headers(response, ('Cookie',))
File
"/home/andrew/projects/healthmatters/website/env/lib/python3.5/site-packages/django/utils/cache.py",
line 285, in patch_vary_headers
if response.has_header('Vary'):
AttributeError: 'NoneType' object has no attribute 'has_header'
This happens for / and for /favicon.ico. It seems like there is no response
object by the time it hits this middleware, and indeed, adding a print
statement in my view for / shows it's get() method isn't even being called.
I think an exception is happening somewhere, but the attempt to render the
500 page is having issues because the middleware is saying response is None.
So I've no idea what exception is causing it this time...
Here's what the bit in urls.py looks like:
baseurls = [
url(r'^$', landing_views.LandingPageView.as_view(), name='landing_page'),
...
]
urlpatterns = baseurls +
static(settings.MEDIA_URL, document_root=settings.MEDIA_ROOT)
Here's some settings:
MIDDLEWARE = (
'db_multitenant.middleware.MultiTenantMiddleware',
'django.contrib.sessions.middleware.SessionMiddleware',
'corsheaders.middleware.CorsMiddleware',
'django.middleware.common.CommonMiddleware',
'django.contrib.auth.middleware.AuthenticationMiddleware',
#'django.contrib.auth.middleware.SessionAuthenticationMiddleware',
'django.contrib.messages.middleware.MessageMiddleware',
'django.middleware.clickjacking.XFrameOptionsMiddleware',
'django.middleware.csrf.CsrfViewMiddleware',
'corsheaders.middleware.CorsPostCsrfMiddleware',
'easytz.middleware.TimezonesMiddleware',
'impersonate.middleware.ImpersonateMiddleware',
'apps.biomarker.middleware.SubscriptionMiddleware',
'apps.biomarker.middleware.SuperuserMiddleware',
'apps.practice.middleware.TermsMiddleware',
)
TEMPLATES = [
{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
'DIRS': [
os.path.join(BASE_DIR, 'apps/templates'),
],
'APP_DIRS': True,
'OPTIONS': {
'context_processors': [
'django.contrib.auth.context_processors.auth',
'django.template.context_processors.request',
'django.template.context_processors.i18n',
'apps.postman.context_processors.inbox',
'apps.biomarker.context_processors.base_template_for_user_type',
'apps.menus.context_processors.menu_elements',
'django.template.context_processors.tz',
'django_settings_export.settings_export',
'apps.hm_multitenancy.context_processors.include_tenant'
]
},
},
]
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