我现在正在部署openEdx系统，从移动设备通过Azure AD登录时遇到错误。
Web Azure AD登录工作正常，我也可以从azure广告中获取access_token。
但是，当我尝试通过/ oauth2 / exchange_access_token / azuread-oauth2 / url与openEdx令牌交换Azure令牌时，由于响应为空，因此出现以下错误。
AttributeError：'NoneType'对象没有属性'get'
因此，我是openEdx的新手，我很难解决这个问题。请帮助指导我正确解决此问题。以下是详细错误日志。
预先感谢
Apr 1 12:38:45 edxapp [service_variant=lms][django.request][env:sandbox] ERROR [edxapp 24509] [exception.py:135] - Internal Server Error: /oauth2/exchange_access_token/azuread-oauth2/
Traceback (most recent call last):
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/core/handlers/exception.py", line 41, in inner
response = get_response(request)
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/core/handlers/base.py", line 249, in _legacy_get_response
response = self._get_response(request)
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/core/handlers/base.py", line 187, in _get_response
response = self.process_exception_by_middleware(e, request)
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/core/handlers/base.py", line 185, in _get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/utils/decorators.py", line 185, in inner
return func(*args, **kwargs)
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/views/decorators/csrf.py", line 58, in wrapped_view
return view_func(*args, **kwargs)
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/views/generic/base.py", line 68, in view
return self.dispatch(request, *args, **kwargs)
File "/edx/app/edxapp/edx-platform/openedx/core/djangoapps/oauth_dispatch/views.py", line 57, in dispatch
return view(request, *args, **kwargs)
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/views/decorators/csrf.py", line 58, in wrapped_view
return view_func(*args, **kwargs)
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/views/generic/base.py", line 68, in view
return self.dispatch(request, *args, **kwargs)
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/utils/decorators.py", line 67, in _wrapper
return bound_func(*args, **kwargs)
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/views/decorators/csrf.py", line 58, in wrapped_view
return view_func(*args, **kwargs)
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/utils/decorators.py", line 63, in bound_func
return func.__get__(self, type(self))(*args2, **kwargs2)
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/utils/decorators.py", line 67, in _wrapper
return bound_func(*args, **kwargs)
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/social_django/utils.py", line 49, in wrapper
return func(request, backend, *args, **kwargs)
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/utils/decorators.py", line 63, in bound_func
return func.__get__(self, type(self))(*args2, **kwargs2)
File "/edx/app/edxapp/edx-platform/openedx/core/djangoapps/auth_exchange/views.py", line 44, in dispatch
return super(AccessTokenExchangeBase, self).dispatch(*args, **kwargs)
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/rest_framework/views.py", line 489, in dispatch
response = self.handle_exception(exc)
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/rest_framework/views.py", line 449, in handle_exception
self.raise_uncaught_exception(exc)
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/rest_framework/views.py", line 486, in dispatch
response = handler(request, *args, **kwargs)
File "/edx/app/edxapp/edx-platform/openedx/core/djangoapps/auth_exchange/views.py", line 57, in post
if not form.is_valid():
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/forms/forms.py", line 183, in is_valid
return self.is_bound and not self.errors
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/forms/forms.py", line 175, in errors
self.full_clean()
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/forms/forms.py", line 385, in full_clean
self._clean_form()
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/provider/forms.py", line 63, in _clean_form
super(OAuthForm, self)._clean_form()
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/forms/forms.py", line 412, in _clean_form
cleaned_data = self.clean()
File "/edx/app/edxapp/edx-platform/openedx/core/djangoapps/auth_exchange/forms.py", line 95, in clean
user = backend.do_auth(access_token, allow_inactive_user=True)
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/social_core/utils.py", line 252, in wrapper
return func(*args, **kwargs)
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/social_core/backends/oauth.py", line 410, in do_auth
data = self.user_data(access_token, *args, **kwargs)
File "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/social_core/backends/azuread.py", line 80, in user_data
id_token = response.get('id_token')
AttributeError: 'NoneType' object has no attribute 'get'