Need help for Edx Lms Operation

[Sukla Nag]

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.

[frank]

looks like somebody faced this issue and solved.

Please check https://groups.google.com/forum/#!topic/edx-code/UYVwjRwhUfI

[Sukla Nag]

Thanks for the help, but I tried that, did not work

[Jun Matsushita]

I encountered the same error and haven't solved it yet but found this message 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