gistfile1.py

Traceback (most recent call last):
  File "/var/www/mongoengine-gevent-socket.io/resources/artifact/resource.py", line 36, in on_READ_LIST
    bundle = resource.read_list()
  File "/var/www/mongoengine-gevent-socket.io/debug_utils.py", line 83, in timed
    result = method(*args, **kw)
  File "/var/www/mongoengine-gevent-socket.io/core/resource.py", line 127, in read_list
    q = self.get_object_list(bundle)
  File "/var/www/mongoengine-gevent-socket.io/core/resource.py", line 119, in get_object_list
    q = q.options(joinedload(m))  #.load_only('id'),
  File "/home/ubuntu/venv/socket/local/lib/python2.7/site-packages/sqlalchemy/orm/query.py", line 1062, in options
    return self._options(False, *args)
  File "<string>", line 2, in _options
  File "/home/ubuntu/venv/socket/local/lib/python2.7/site-packages/sqlalchemy/orm/base.py", line 165, in generate
    fn(self, *args[1:], **kw)
  File "/home/ubuntu/venv/socket/local/lib/python2.7/site-packages/sqlalchemy/orm/query.py", line 1079, in _options
    opt.process_query(self)
  File "/home/ubuntu/venv/socket/local/lib/python2.7/site-packages/sqlalchemy/orm/strategy_options.py", line 89, in process_query
    self._process(query, True)
  File "/home/ubuntu/venv/socket/local/lib/python2.7/site-packages/sqlalchemy/orm/strategy_options.py", line 289, in _process
    val._bind_loader(query, query._attributes, raiseerr)
  File "/home/ubuntu/venv/socket/local/lib/python2.7/site-packages/sqlalchemy/orm/strategy_options.py", line 359, in _bind_loader
    raiseerr)
  File "/home/ubuntu/venv/socket/local/lib/python2.7/site-packages/sqlalchemy/orm/strategy_options.py", line 421, in _find_entity_prop_comparator
    x in query._mapper_entities))
ArgumentError: Can't find property 'artists' on any entity specified in this Query.  Note the full path from root (Mapper|Artifact|collectrium_artifact,Mapper|Artist|collectrium_artist) to target entity must be specified.

Can't find property 'artists' on any entity specified in this Query.  Note the full path from root (Mapper|Artifact|collectrium_artifact,Mapper|Artist|collectrium_artist) to target entity must be specified.