What is this AttributeError in django mongodb, and how do I prevent this? -

i keep running error both .raw_query , .filter,

it happens when simple query :

tried google did not have luck except this .

is same issue? , how update schema prevent happening?

from app.models import poll import datetime  polls = poll.objects.filter(created_at__gte=datetime.datetime(2013,5,1)) p  in polls:      print p 

error:

attributeerror: 'unicode' object has no attribute 'iteritems'