Traceback (most recent call last):


 "train_resnet50_video.py", line 52, in <module>

epochs, validation_steps, steps_per_epoch)


 "U:\git\code311016\Resnet50Video.py", line 91, in fit_generator

self.model.save("D:\\dataset\\model.hdf5")


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\site-packages\keras\engine\topology.py", line 2553, in save

save_model(self, filepath, overwrite, include_optimizer)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\site-packages\keras\models.py", line 107, in save_model

'config': model.get_config()


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\site-packages\keras\engine\topology.py", line 2394, in get_config

return copy.deepcopy(config)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 218, in _deepcopy_list

y.append(deepcopy(a, memo))


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 223, in _deepcopy_tuple

y = [deepcopy(a, memo) for a in x]


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 223, in <listcomp>

y = [deepcopy(a, memo) for a in x]


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 223, in _deepcopy_tuple

y = [deepcopy(a, memo) for a in x]


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 223, in <listcomp>

y = [deepcopy(a, memo) for a in x]


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 182, in deepcopy

y = _reconstruct(x, rv, 1, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 297, in _reconstruct

state = deepcopy(state, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 182, in deepcopy

y = _reconstruct(x, rv, 1, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 297, in _reconstruct

state = deepcopy(state, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 218, in _deepcopy_list

y.append(deepcopy(a, memo))


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 182, in deepcopy

y = _reconstruct(x, rv, 1, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 297, in _reconstruct

state = deepcopy(state, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 223, in _deepcopy_tuple

y = [deepcopy(a, memo) for a in x]


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 223, in <listcomp>

y = [deepcopy(a, memo) for a in x]


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 182, in deepcopy

y = _reconstruct(x, rv, 1, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 297, in _reconstruct

state = deepcopy(state, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 218, in _deepcopy_list

y.append(deepcopy(a, memo))


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 182, in deepcopy

y = _reconstruct(x, rv, 1, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 297, in _reconstruct

state = deepcopy(state, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 218, in _deepcopy_list

y.append(deepcopy(a, memo))


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 182, in deepcopy

y = _reconstruct(x, rv, 1, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 297, in _reconstruct

state = deepcopy(state, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 218, in _deepcopy_list

y.append(deepcopy(a, memo))


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 182, in deepcopy

y = _reconstruct(x, rv, 1, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 297, in _reconstruct

state = deepcopy(state, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 218, in _deepcopy_list

y.append(deepcopy(a, memo))


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 182, in deepcopy

y = _reconstruct(x, rv, 1, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 297, in _reconstruct

state = deepcopy(state, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 218, in _deepcopy_list

y.append(deepcopy(a, memo))


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 182, in deepcopy

y = _reconstruct(x, rv, 1, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 297, in _reconstruct

state = deepcopy(state, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 218, in _deepcopy_list

y.append(deepcopy(a, memo))


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 182, in deepcopy

y = _reconstruct(x, rv, 1, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 297, in _reconstruct

state = deepcopy(state, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 182, in deepcopy

y = _reconstruct(x, rv, 1, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 297, in _reconstruct

state = deepcopy(state, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 182, in deepcopy

y = _reconstruct(x, rv, 1, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 297, in _reconstruct

state = deepcopy(state, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 218, in _deepcopy_list

y.append(deepcopy(a, memo))


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 182, in deepcopy

y = _reconstruct(x, rv, 1, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 297, in _reconstruct

state = deepcopy(state, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 218, in _deepcopy_list

y.append(deepcopy(a, memo))


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 182, in deepcopy

y = _reconstruct(x, rv, 1, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 297, in _reconstruct

state = deepcopy(state, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 218, in _deepcopy_list

y.append(deepcopy(a, memo))


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 182, in deepcopy

y = _reconstruct(x, rv, 1, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 297, in _reconstruct

state = deepcopy(state, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 218, in _deepcopy_list

y.append(deepcopy(a, memo))


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 182, in deepcopy

y = _reconstruct(x, rv, 1, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 297, in _reconstruct

state = deepcopy(state, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 218, in _deepcopy_list

y.append(deepcopy(a, memo))


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 182, in deepcopy

y = _reconstruct(x, rv, 1, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 297, in _reconstruct

state = deepcopy(state, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 218, in _deepcopy_list

y.append(deepcopy(a, memo))


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 223, in _deepcopy_tuple

y = [deepcopy(a, memo) for a in x]


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 223, in <listcomp>

y = [deepcopy(a, memo) for a in x]


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 182, in deepcopy

y = _reconstruct(x, rv, 1, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 297, in _reconstruct

state = deepcopy(state, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 182, in deepcopy

y = _reconstruct(x, rv, 1, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 297, in _reconstruct

state = deepcopy(state, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 155, in deepcopy

y = copier(x, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 243, in _deepcopy_dict

y[deepcopy(key, memo)] = deepcopy(value, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 182, in deepcopy

y = _reconstruct(x, rv, 1, memo)


 "C:\Users\koko\AppData\Local\conda\conda\envs\tf\lib\copy.py", line 306, in _reconstruct

y.__dict__.update(state)
AttributeError: 'NoneType' object has no attribute 'update'

Traceback (most recent call last):


 "/usr/local/lib/python3.5/dist-packages/flask/app.py", line 2000, in __call__

return self.wsgi_app(environ, start_response)


 "/usr/local/lib/python3.5/dist-packages/flask/app.py", line 1991, in wsgi_app

response = self.make_response(self.handle_exception(e))


 "/usr/local/lib/python3.5/dist-packages/flask/app.py", line 1567, in handle_exception

reraise(exc_type, exc_value, tb)


 "/usr/local/lib/python3.5/dist-packages/flask/_compat.py", line 33, in reraise

raise value


 "/usr/local/lib/python3.5/dist-packages/flask/app.py", line 1988, in wsgi_app

response = self.full_dispatch_request()


 "/usr/local/lib/python3.5/dist-packages/flask/app.py", line 1641, in full_dispatch_request

rv = self.handle_user_exception(e)


 "/usr/local/lib/python3.5/dist-packages/flask/app.py", line 1544, in handle_user_exception

reraise(exc_type, exc_value, tb)


 "/usr/local/lib/python3.5/dist-packages/flask/_compat.py", line 33, in reraise

raise value


 "/usr/local/lib/python3.5/dist-packages/flask/app.py", line 1639, in full_dispatch_request

rv = self.dispatch_request()


 "/usr/local/lib/python3.5/dist-packages/flask/app.py", line 1625, in dispatch_request

return self.view_functions[rule.endpoint](**req.view_args)


 "/usr/local/lib/python3.5/dist-packages/flask_restless/views/base.py", line 394, in new_func

return func(*args, **kw)


 "/usr/local/lib/python3.5/dist-packages/flask_restless/views/base.py", line 343, in new_func

return func(*args, **kw)


 "/usr/local/lib/python3.5/dist-packages/flask_restless/views/base.py", line 247, in new_func

return func(*args, **kw)


 "/usr/local/lib/python3.5/dist-packages/flask/views.py", line 84, in view

return self.dispatch_request(*args, **kwargs)


 "/usr/local/lib/python3.5/dist-packages/flask/views.py", line 149, in dispatch_request

return meth(*args, **kwargs)


 "/usr/local/lib/python3.5/dist-packages/flask_restless/views/base.py", line 447, in wrapped

return func(*args, **kw)


 "/usr/local/lib/python3.5/dist-packages/flask_restless/views/resources.py", line 400, in get

return self._get_resource(resource_id)


 "/usr/local/lib/python3.5/dist-packages/flask_restless/views/resources.py", line 335, in _get_resource

return self._get_resource_helper(resource)


 "/usr/local/lib/python3.5/dist-packages/flask_restless/views/base.py", line 1549, in _get_resource_helper

result = serializer.serialize(resource, only=only)


 "/usr/local/lib/python3.5/dist-packages/flask_restless/serialization/serializers.py", line 493, in serialize

resource = self._dump(instance, only=only)


 "/usr/local/lib/python3.5/dist-packages/flask_restless/serialization/serializers.py", line 315, in _dump

assoc_scalars = list(assoc_proxy_scalar_collections(model))


 "/usr/local/lib/python3.5/dist-packages/flask_restless/helpers.py", line 87, in assoc_proxy_scalar_collections

and not isinstance(v.remote_attr.property, RelationshipProperty) \
AttributeError: 'AssociationProxy' object has no attribute 'property'
