Incorrect padding with FedoraOpenId

I have previously reported this under https://github.com/python-social-auth/social-core/issues/270 which was then closed in favor of https://github.com/python-social-auth/social-app-django/issues/135, which was fixed in https://github.com/python-social-auth/social-app-django/pull/136.

However I am still seeing a problem with social_django 3.1.0 on Python 3.6

Error: Incorrect padding
  File "django/core/handlers/exception.py", line 34, in inner
    response = get_response(request)
  File "django/core/handlers/base.py", line 115, in _get_response
    response = self.process_exception_by_middleware(e, request)
  File "django/core/handlers/base.py", line 113, in _get_response
    response = wrapped_callback(request, *callback_args, **callback_kwargs)
  File "django/views/decorators/cache.py", line 44, in _wrapped_view_func
    response = view_func(request, *args, **kwargs)
  File "social_django/utils.py", line 49, in wrapper
    return func(request, backend, *args, **kwargs)
  File "social_django/views.py", line 23, in auth
    return do_auth(request.backend, redirect_name=REDIRECT_FIELD_NAME)
  File "social_core/actions.py", line 27, in do_auth
    return backend.start()
  File "social_core/backends/base.py", line 34, in start
    if self.uses_redirect():
  File "social_core/backends/open_id.py", line 242, in uses_redirect
    return self.openid_request().shouldSendRedirect()
  File "social_core/backends/open_id.py", line 248, in openid_request
    params))
  File "openid/consumer/consumer.py", line 359, in begin
    return self.beginWithoutDiscovery(service, anonymous)
  File "openid/consumer/consumer.py", line 382, in beginWithoutDiscovery
    auth_req = self.consumer.begin(service)
  File "openid/consumer/consumer.py", line 610, in begin
    assoc = self._getAssociation(service_endpoint)
  File "openid/consumer/consumer.py", line 1178, in _getAssociation
    assoc = self.store.getAssociation(endpoint.server_url)
  File "social_core/store.py", line 43, in getAssociation
    for assoc_id, association in self.assoc.oids(server_url, handle):
  File "social_core/storage.py", line 227, in oids
    for assoc in cls.get(**kwargs)
  File "social_core/storage.py", line 227, in <listcomp>
    for assoc in cls.get(**kwargs)
  File "social_core/storage.py", line 235, in openid_association
    return OpenIdAssociation(assoc.handle, base64.decodestring(secret),
  File "python3.6/base64.py", line 554, in decodestring
    return decodebytes(s)
  File "python3.6/base64.py", line 546, in decodebytes
    return binascii.a2b_base64(s)

Looking at my original traceback and this one they look the same. If you can give me some tips how to debug I will send a pull request.

python-social-auth / social-app-django

Incorrect padding with FedoraOpenId #241