Raised a ticket <https://code.djangoproject.com/ticket/31895> The only workaround is to truncate the django_session table. (clearsessions <https://docs.djangoproject.com/en/3.0/ref/django-admin/#django-contrib-sessions> did not work)
On Mon, 17 Aug 2020 at 21:24, Matthew Hegarty <[email protected]> wrote: > Hey Diptesh - did you get anywhere with understanding this? Did y ou get > any response from the Django devs? > Just happened to me on my Staging site. Recently upgraded from 3.0 to 3.1 > > I can login with Firefox, but Chrome crashes with the following error: > > ```python > Internal Server Error: /home/ > Traceback (most recent call last): > File > "/usr/local/lib/python3.8/site-packages/django/contrib/sessions/backends/base.py", > line 215, in _get_session > return self._session_cache > AttributeError: 'SessionStore' object has no attribute '_session_cache' > During handling of the above exception, another exception occurred: > Traceback (most recent call last): > File > "/usr/local/lib/python3.8/site-packages/django/contrib/sessions/backends/base.py", > line 118, in decode > return signing.loads(session_data, salt=self.key_salt, > serializer=self.serializer) > File "/usr/local/lib/python3.8/site-packages/django/core/signing.py", line > 135, in loads > base64d = TimestampSigner(key, salt=salt).unsign(s, > max_age=max_age).encode() > File "/usr/local/lib/python3.8/site-packages/django/core/signing.py", line > 201, in unsign > result = super().unsign(value) > File "/usr/local/lib/python3.8/site-packages/django/core/signing.py", line > 184, in unsign > raise BadSignature('Signature "%s" does not match' % sig) > django.core.signing.BadSignature: Signature > "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx" does not match > During handling of the above exception, another exception occurred: > Traceback (most recent call last): > File > "/usr/local/lib/python3.8/site-packages/django/core/handlers/exception.py", > line 47, in inner > response = get_response(request) > File > "/usr/local/lib/python3.8/site-packages/django/core/handlers/base.py", line > 179, in _get_response > response = wrapped_callback(request, *callback_args, **callback_kwargs) > File > "/usr/local/lib/python3.8/site-packages/django/views/generic/base.py", line > 73, in view > return self.dispatch(request, *args, **kwargs) > File > "/usr/local/lib/python3.8/site-packages/django/contrib/auth/mixins.py", > line 50, in dispatch > if not request.user.is_authenticated: > File "/usr/local/lib/python3.8/site-packages/django/utils/functional.py", > line 240, in inner > self._setup() > File "/usr/local/lib/python3.8/site-packages/django/utils/functional.py", > line 376, in _setup > self._wrapped = self._setupfunc() > File "/usr/local/lib/python3.8/site-packages/django_otp/middleware.py", > line 38, in _verify_user > user.otp_device = None > File "/usr/local/lib/python3.8/site-packages/django/utils/functional.py", > line 270, in __setattr__ > self._setup() > File "/usr/local/lib/python3.8/site-packages/django/utils/functional.py", > line 376, in _setup > self._wrapped = self._setupfunc() > File > "/usr/local/lib/python3.8/site-packages/django/contrib/auth/middleware.py", > line 23, in <lambda> > request.user = SimpleLazyObject(lambda: get_user(request)) > File > "/usr/local/lib/python3.8/site-packages/django/contrib/auth/middleware.py", > line 11, in get_user > request._cached_user = auth.get_user(request) > File > "/usr/local/lib/python3.8/site-packages/django/contrib/auth/__init__.py", > line 174, in get_user > user_id = _get_user_session_key(request) > File > "/usr/local/lib/python3.8/site-packages/django/contrib/auth/__init__.py", > line 58, in _get_user_session_key > return get_user_model()._meta.pk.to_python(request.session[SESSION_KEY]) > File > "/usr/local/lib/python3.8/site-packages/django/contrib/sessions/backends/base.py", > line 65, in __getitem__ > return self._session[key] > File > "/usr/local/lib/python3.8/site-packages/django/contrib/sessions/backends/base.py", > line 220, in _get_session > self._session_cache = self.load() > File > "/usr/local/lib/python3.8/site-packages/django/contrib/sessions/backends/db.py", > line 44, in load > return self.decode(s.session_data) if s else {} > File > "/usr/local/lib/python3.8/site-packages/django/contrib/sessions/backends/base.py", > line 122, in decode > return self._legacy_decode(session_data) > File > "/usr/local/lib/python3.8/site-packages/django/contrib/sessions/backends/base.py", > line 126, in _legacy_decode > encoded_data = base64.b64decode(session_data.encode('ascii')) > File "/usr/local/lib/python3.8/base64.py", line 87, in b64decode > return binascii.a2b_base64(s) > binascii.Error: Incorrect padding > ``` > On Monday, 10 August 2020 at 12:21:34 UTC+1 Diptesh Choudhuri wrote: > >> >> >> Environment: >> >> >> >> >> Request Method: GET >> Request URL: http://127.0.0.1:8000/admin/ >> >> >> Django Version: 3.1 >> Python Version: 3.8.3 >> Installed Applications: >> ['django.contrib.admin', >> 'django.contrib.auth', >> 'django.contrib.contenttypes', >> 'django.contrib.sessions', >> 'django.contrib.messages', >> 'django.contrib.staticfiles', >> 'rest_framework', >> 'rest_framework.authtoken', >> 'accounts.apps.AccountsConfig', >> 'posts.apps.PostsConfig'] >> Installed Middleware: >> ['django.middleware.security.SecurityMiddleware', >> 'django.contrib.sessions.middleware.SessionMiddleware', >> 'django.middleware.common.CommonMiddleware', >> 'django.middleware.csrf.CsrfViewMiddleware', >> 'django.contrib.auth.middleware.AuthenticationMiddleware', >> 'django.contrib.messages.middleware.MessageMiddleware', >> 'django.middleware.clickjacking.XFrameOptionsMiddleware'] >> >> >> >> >> >> >> Traceback (most recent call last): >> File >> "/home/ignisda/.cache/pypoetry/virtualenvs/backend-3DENPaHW-py3.8/lib/python3.8/site-packages/django/contrib/sessions/backends/base.py" >> , line 215, in _get_session >> return self._session_cache >> >> >> During handling of the above exception ('SessionStore' object has no >> attribute '_session_cache'), another exception occurred: >> File >> "/home/ignisda/.cache/pypoetry/virtualenvs/backend-3DENPaHW-py3.8/lib/python3.8/site-packages/django/contrib/sessions/backends/base.py" >> , line 118, in decode >> return signing.loads(session_data, salt=self.key_salt, serializer= >> self.serializer) >> File >> "/home/ignisda/.cache/pypoetry/virtualenvs/backend-3DENPaHW-py3.8/lib/python3.8/site-packages/django/core/signing.py" >> , line 135, in loads >> base64d = TimestampSigner(key, salt=salt).unsign(s, max_age=max_age). >> encode() >> File >> "/home/ignisda/.cache/pypoetry/virtualenvs/backend-3DENPaHW-py3.8/lib/python3.8/site-packages/django/core/signing.py" >> , line 201, in unsign >> result = super().unsign(value) >> File >> "/home/ignisda/.cache/pypoetry/virtualenvs/backend-3DENPaHW-py3.8/lib/python3.8/site-packages/django/core/signing.py" >> , line 184, in unsign >> raise BadSignature('Signature "%s" does not match' % sig) >> >> >> During handling of the above exception (Signature >> "JKiu07_FryzGGxaZmuA9hc0WmtZKBMOOeOj3Fp3j8ho" does not match), another >> exception occurred: >> File >> "/home/ignisda/.cache/pypoetry/virtualenvs/backend-3DENPaHW-py3.8/lib/python3.8/site-packages/django/core/handlers/exception.py" >> , line 47, in inner >> response = get_response(request) >> File >> "/home/ignisda/.cache/pypoetry/virtualenvs/backend-3DENPaHW-py3.8/lib/python3.8/site-packages/django/core/handlers/base.py" >> , line 179, in _get_response >> response = wrapped_callback(request, *callback_args, ** >> callback_kwargs) >> File >> "/home/ignisda/.cache/pypoetry/virtualenvs/backend-3DENPaHW-py3.8/lib/python3.8/site-packages/django/contrib/admin/sites.py" >> , line 251, in wrapper >> return self.admin_view(view, cacheable)(*args, **kwargs) >> File >> "/home/ignisda/.cache/pypoetry/virtualenvs/backend-3DENPaHW-py3.8/lib/python3.8/site-packages/django/utils/decorators.py" >> , line 130, in _wrapped_view >> response = view_func(request, *args, **kwargs) >> File >> "/home/ignisda/.cache/pypoetry/virtualenvs/backend-3DENPaHW-py3.8/lib/python3.8/site-packages/django/views/decorators/cache.py" >> , line 44, in _wrapped_view_func >> response = view_func(request, *args, **kwargs) >> File >> "/home/ignisda/.cache/pypoetry/virtualenvs/backend-3DENPaHW-py3.8/lib/python3.8/site-packages/django/contrib/admin/sites.py" >> , line 222, in inner >> if not self.has_permission(request): >> File >> "/home/ignisda/.cache/pypoetry/virtualenvs/backend-3DENPaHW-py3.8/lib/python3.8/site-packages/django/contrib/admin/sites.py" >> , line 196, in has_permission >> return request.user.is_active and request.user.is_staff >> File >> "/home/ignisda/.cache/pypoetry/virtualenvs/backend-3DENPaHW-py3.8/lib/python3.8/site-packages/django/utils/functional.py" >> , line 240, in inner >> self._setup() >> File >> "/home/ignisda/.cache/pypoetry/virtualenvs/backend-3DENPaHW-py3.8/lib/python3.8/site-packages/django/utils/functional.py" >> , line 376, in _setup >> self._wrapped = self._setupfunc() >> File >> "/home/ignisda/.cache/pypoetry/virtualenvs/backend-3DENPaHW-py3.8/lib/python3.8/site-packages/django/contrib/auth/middleware.py" >> , line 23, in <lambda> >> request.user = SimpleLazyObject(lambda: get_user(request)) >> File >> "/home/ignisda/.cache/pypoetry/virtualenvs/backend-3DENPaHW-py3.8/lib/python3.8/site-packages/django/contrib/auth/middleware.py" >> , line 11, in get_user >> request._cached_user = auth.get_user(request) >> File >> "/home/ignisda/.cache/pypoetry/virtualenvs/backend-3DENPaHW-py3.8/lib/python3.8/site-packages/django/contrib/auth/__init__.py" >> , line 174, in get_user >> user_id = _get_user_session_key(request) >> File >> "/home/ignisda/.cache/pypoetry/virtualenvs/backend-3DENPaHW-py3.8/lib/python3.8/site-packages/django/contrib/auth/__init__.py" >> , line 58, in _get_user_session_key >> return get_user_model()._meta.pk.to_python(request.session[ >> SESSION_KEY]) >> File >> "/home/ignisda/.cache/pypoetry/virtualenvs/backend-3DENPaHW-py3.8/lib/python3.8/site-packages/django/contrib/sessions/backends/base.py" >> , line 65, in __getitem__ >> return self._session[key] >> File >> "/home/ignisda/.cache/pypoetry/virtualenvs/backend-3DENPaHW-py3.8/lib/python3.8/site-packages/django/contrib/sessions/backends/base.py" >> , line 220, in _get_session >> self._session_cache = self.load() >> File >> "/home/ignisda/.cache/pypoetry/virtualenvs/backend-3DENPaHW-py3.8/lib/python3.8/site-packages/django/contrib/sessions/backends/db.py" >> , line 44, in load >> return self.decode(s.session_data) if s else {} >> File >> "/home/ignisda/.cache/pypoetry/virtualenvs/backend-3DENPaHW-py3.8/lib/python3.8/site-packages/django/contrib/sessions/backends/base.py" >> , line 122, in decode >> return self._legacy_decode(session_data) >> File >> "/home/ignisda/.cache/pypoetry/virtualenvs/backend-3DENPaHW-py3.8/lib/python3.8/site-packages/django/contrib/sessions/backends/base.py" >> , line 126, in _legacy_decode >> encoded_data = base64.b64decode(session_data.encode('ascii')) >> File "/usr/lib/python3.8/base64.py", line 87, in b64decode >> return binascii.a2b_base64(s) >> >> >> Exception Type: Error at /admin/ >> Exception Value: Incorrect padding >> >> >> This happened first when I was developing on my Android device using >> Termux app. I switched my browser to Google-Chrome and the issue was >> resolved. >> Then today I was developing on my PC, using qutebrowser and this error >> popped up again. Switching to Google-Chrome fixed the issue. >> >> I don't think this is an issue with the browsers themselves, because I >> have completed entire django projects in both these devices, and never had >> to switch to Chrome. >> >> The only differences happen to be- This is my first time using >> djangorestframework, first time using django 3.1 >> >> Is this a bug that has leaked into django 3.1 inadvertently? >> > -- > You received this message because you are subscribed to a topic in the > Google Groups "Django users" group. > To unsubscribe from this topic, visit > https://groups.google.com/d/topic/django-users/PExKciSIqeU/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > To view this discussion on the web visit > https://groups.google.com/d/msgid/django-users/9356132f-625e-4556-8107-c8de70a0c540n%40googlegroups.com > <https://groups.google.com/d/msgid/django-users/9356132f-625e-4556-8107-c8de70a0c540n%40googlegroups.com?utm_medium=email&utm_source=footer> > . > -- You received this message because you are subscribed to the Google Groups "Django users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/django-users/CAAcKVnk9hAfrML%2BXNR_amdqTxcPWPpe%3DOUUxLR6X44RdU2wXcQ%40mail.gmail.com.
