LTI, juniper and use preference ????

gistfile1.txt

Feb 12 18:25:07 ip-10-0-0-10 [service_variant=lms][py.warnings][env:sandbox] WARNING [ip-10-0-0-10  15319] [user None] [backends.py:37] - /edx/app/edxapp/venvs/edxapp/lib/python3.5/site-packages/django/contrib/auth/__init__.py:116: UserWarning: No request passed to the backend, unable to rate-limit. Username was 'EzhsCbCSn3vBa3y7UhGRSzC3wfr2c4'
  return backend.authenticate(*args, **credentials)
Feb 12 18:25:07 ip-10-0-0-10 [service_variant=lms][audit][env:sandbox] INFO [ip-10-0-0-10  15319] [user 17] [models.py:2387] - Login success - user.id: 17
Feb 12 18:25:07 ip-10-0-0-10 [service_variant=lms][py.warnings][env:sandbox] WARNING [ip-10-0-0-10  15319] [user 17] [__init__.py:1565] - /edx/app/edxapp/venvs/edxapp/lib/python3.5/site-packages/pkg_resources/__init__.py:1146: DeprecationWarning: Use of .. or absolute path in a resource path is not allowed and will raise exceptions in a future release.
  self, resource_name
Feb 12 18:25:07 ip-10-0-0-10 [service_variant=lms][openedx.core.djangoapps.user_api.helpers][env:sandbox] WARNING [ip-10-0-0-10  15319] [user 17] [helpers.py:68] - A handled error occurred when calling 'set_user_preference' with arguments '(<User: EzhsCbCSn3vBa3y7UhGRSzC3wfr2c4>, 'pref-lang', 'en')' and keyword arguments '{}': PreferenceValidationError({'pref-lang': {'user_message': "Value 'en' is not valid for user preference 'pref-lang'.", 'developer_message': 'Value \'en\' not valid for preference \'pref-lang\': {\'user\': [\'Invalid pk "17" - object does not exist.\']}'}},)
Feb 12 18:25:07 ip-10-0-0-10 [service_variant=lms][root][env:sandbox] ERROR [ip-10-0-0-10  15319] [user 17] [signals.py:23] - Uncaught exception from <class 'django.core.handlers.wsgi.WSGIHandler'>
Traceback (most recent call last):
  File "/edx/app/edxapp/venvs/edxapp/lib/python3.5/site-packages/django/core/handlers/base.py", line 131, in get_response
    response = middleware_method(request, response)
  File "/edx/app/edxapp/edx-platform/openedx/core/djangoapps/lang_pref/middleware.py", line 63, in process_response
    set_user_preference(current_user, LANGUAGE_KEY, anonymous_cookie_lang)
  File "/edx/app/edxapp/edx-platform/openedx/core/djangoapps/user_api/helpers.py", line 53, in _wrapped
    return func(*args, **kwargs)
  File "/edx/app/edxapp/edx-platform/openedx/core/djangoapps/user_api/preferences/api.py", line 186, in set_user_preference
    validate_user_preference_serializer(serializer, preference_key, preference_value)
  File "/edx/app/edxapp/edx-platform/openedx/core/djangoapps/user_api/preferences/api.py", line 403, in validate_user_preference_serializer
    "user_message": user_message,
openedx.core.djangoapps.user_api.errors.PreferenceValidationError: {'pref-lang': {'user_message': "Value 'en' is not valid for user preference 'pref-lang'.", 'developer_message': 'Value \'en\' not valid for preference \'pref-lang\': {\'user\': [\'Invalid pk "17" - object does not exist.\']}'}}
Feb 12 18:25:07 ip-10-0-0-10 [service_variant=lms][django.request][env:sandbox] ERROR [ip-10-0-0-10  15319] [user 17] [exception.py:135] - Internal Server Error: /lti_provider/courses/course-v1:UMontreal+TEST_LTI_01+E2016/block-v1:UMontreal+TEST_LTI_01+E2016+type@sequential+block@1c40b4c92c58421da885bea7a63992e1
Traceback (most recent call last):
  File "/edx/app/edxapp/venvs/edxapp/lib/python3.5/site-packages/django/core/handlers/base.py", line 131, in get_response
    response = middleware_method(request, response)
  File "/edx/app/edxapp/edx-platform/openedx/core/djangoapps/lang_pref/middleware.py", line 63, in process_response
    set_user_preference(current_user, LANGUAGE_KEY, anonymous_cookie_lang)
  File "/edx/app/edxapp/edx-platform/openedx/core/djangoapps/user_api/helpers.py", line 53, in _wrapped
    return func(*args, **kwargs)
  File "/edx/app/edxapp/edx-platform/openedx/core/djangoapps/user_api/preferences/api.py", line 186, in set_user_preference
    validate_user_preference_serializer(serializer, preference_key, preference_value)
  File "/edx/app/edxapp/edx-platform/openedx/core/djangoapps/user_api/preferences/api.py", line 403, in validate_user_preference_serializer
    "user_message": user_message,
openedx.core.djangoapps.user_api.errors.PreferenceValidationError: {'pref-lang': {'user_message': "Value 'en' is not valid for user preference 'pref-lang'.", 'developer_message': 'Value \'en\' not valid for preference \'pref-lang\': {\'user\': [\'Invalid pk "17" - object does not exist.\']}'}}