I encountered the same error and haven't solved it yet but found this message <https://openedx.slack.com/archives/C02SNA1U4/p1482940618000386> on the edx slack which seems to point at a solution. I'll report back here if I sort it out.
Richard Moch > So: such error happens when the file requirement/edx/local.txt fails to > install edx-platform as a Python package > Posted in #generalDec 28th, 2016 at 4:56 PM On Wednesday, August 19, 2015 at 1:38:31 PM UTC+2, Sukla Nag wrote: > > After recompilation of lms using following command > > sudo -u www-data /edx/bin/python.edxapp ./manage.py lms runserver 8000 > --settings aws > > I am getting following error in lms log while accessing course list. > > Traceback (most recent call last): > File > "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/core/handlers/base.py", > line 109, in get_response > response = callback(request, *callback_args, **callback_kwargs) > File > "/edx/app/edxapp/venvs/edxapp/local/lib/python2.7/site-packages/django/utils/decorators.py", > line 91, in _wrapped_view > response = view_func(request, *args, **kwargs) > File "/edx/app/edxapp/edx-platform/common/djangoapps/util/cache.py", line > 70, in wrapper > response = view_func(request, *args, **kwargs) > File "/edx/app/edxapp/edx-platform/lms/djangoapps/branding/views.py", line > 80, in index > return student.views.index(request, user=request.user) > File "/edx/app/edxapp/edx-platform/common/djangoapps/student/views.py", > line 257, in index > courses = get_courses(user, domain=domain) > File "/edx/app/edxapp/edx-platform/lms/djangoapps/courseware/courses.py", > line 349, in get_courses > courses = branding.get_visible_courses() > File "/edx/app/edxapp/edx-platform/lms/djangoapps/branding/__init__.py", > line 13, in get_visible_courses > _courses = modulestore().get_courses() > File > "/edx/app/edxapp/edx-platform/common/lib/xmodule/xmodule/modulestore/mixed.py", > line 89, in inner > retval = func(field_decorator=strip_key_collection, *args, **kwargs) > File > "/edx/app/edxapp/edx-platform/common/lib/xmodule/xmodule/modulestore/mixed.py", > line 258, in get_courses > course_id = self._clean_course_id_for_mapping(course.id) > AttributeError: 'HiddenDescriptorWithMixins' object has no attribute 'id' > > I am not able to figure out the problem. I am not able to locate definition > of object HiddenDescriptorWithMixins anywhere. Please help me in fixing the > problem. > > > -- You received this message because you are subscribed to the Google Groups "General Open edX discussion" group. To view this discussion on the web visit https://groups.google.com/d/msgid/edx-code/aa9ebc2a-bc4a-4206-b256-7f62dda4cb84%40googlegroups.com.
