Internal Server Error: /admin/care/history/2014/12/
Traceback (most recent call last):
  File "/home/schoolsystem/.virtualenvs/schoolsystem/local/lib/python2.7/site-packages/django/core/handlers/base.py", line 115, in get_response
    response = callback(request, *callback_args, **callback_kwargs)
  File "/home/schoolsystem/.virtualenvs/schoolsystem/local/lib/python2.7/site-packages/django/views/generic/base.py", line 68, in view
    return self.dispatch(request, *args, **kwargs)
  File "./admin/manage_care/views.py", line 304, in dispatch
    return super(MonthlyCareHistory, self).dispatch(request, *args, **kwargs)
  File "/home/schoolsystem/.virtualenvs/schoolsystem/local/lib/python2.7/site-packages/braces/views.py", line 106, in dispatch
    request, *args, **kwargs)
  File "/home/schoolsystem/.virtualenvs/schoolsystem/local/lib/python2.7/site-packages/braces/views.py", line 465, in dispatch
    request, *args, **kwargs)
  File "/home/schoolsystem/.virtualenvs/schoolsystem/local/lib/python2.7/site-packages/django/views/generic/base.py", line 86, in dispatch
    return handler(request, *args, **kwargs)
  File "/home/schoolsystem/.virtualenvs/schoolsystem/local/lib/python2.7/site-packages/django/views/generic/base.py", line 153, in get
    context = self.get_context_data(**kwargs)
  File "./admin/manage_care/views.py", line 322, in get_context_data
    last_index=self.last_index
  File "./care/utils.py", line 162, in get_student_records_for_care_history
    }) for student_record in student_record_chunk
  File "./records/models/records.py", line 694, in school_care_cap
    all_caps = self.all_school_care_caps
  File "./records/models/records.py", line 675, in all_school_care_caps
    aggregate_data[month] = get_school_care_cap(month) + school_care.late_fee
TypeError: unsupported operand type(s) for +: 'int' and 'NoneType'