error.txt

Traceback (most recent call last):
  File "<console>", line 1, in <module>
  File "/home/loup/Desktop/projects/new_kidsmamma/kidsmamma/models/mixins.py", line 14, in get_by_id
    return cls.query.get(int(id))
  File "/home/loup/.virtualenvs/new-kidsmamma/local/lib/python2.7/site-packages/flask_sqlalchemy/__init__.py", line 426, in __get__
    mapper = orm.class_mapper(type)
  File "/home/loup/.virtualenvs/new-kidsmamma/local/lib/python2.7/site-packages/sqlalchemy/orm/base.py", line 378, in class_mapper
    mapper = _inspect_mapped_class(class_, configure=configure)
  File "/home/loup/.virtualenvs/new-kidsmamma/local/lib/python2.7/site-packages/sqlalchemy/orm/base.py", line 355, in _inspect_mapped_class
    mapper._configure_all()
  File "/home/loup/.virtualenvs/new-kidsmamma/local/lib/python2.7/site-packages/sqlalchemy/orm/mapper.py", line 1145, in _configure_all
    configure_mappers()
  File "/home/loup/.virtualenvs/new-kidsmamma/local/lib/python2.7/site-packages/sqlalchemy/orm/mapper.py", line 2557, in configure_mappers
    raise e
InvalidRequestError: One or more mappers failed to initialize - can't proceed with initialization of other mappers.  Original exception was: When initializing mapper Mapper|FoodNutrient|healthcare_food_nutrients, expression '_BoundDeclarativeMeta' failed to locate a name ("name '_BoundDeclarativeMeta' is not defined"). If this is a class name, consider adding this relationship() to the <class 'kidsmamma.models.healthcare.FoodNutrient'> class after both dependent classes have been defined.