Traceback (most recent call last):


 "vgsl_model_test.py", line 230, in testEndToEndSizes1dFixed

mode='train')


 "/home/star/workspace/models/street/python/vgsl_model.py", line 225, in InitNetwork

optimizer_type, num_preprocess_threads, reader)


 "/home/star/workspace/models/street/python/vgsl_model.py", line 319, in Build

self._AddOptimizer(optimizer_type)


 "/home/star/workspace/models/street/python/vgsl_model.py", line 490, in _AddOptimizer

self.loss, global_step=self.global_step, name='train')


 "/home/star/anaconda3/envs/my_tf/lib/python2.7/site-packages/tensorflow/python/training/optimizer.py", line 315, in minimize

grad_loss=grad_loss)


 "/home/star/anaconda3/envs/my_tf/lib/python2.7/site-packages/tensorflow/python/training/optimizer.py", line 386, in compute_gradients

colocate_gradients_with_ops=colocate_gradients_with_ops)


 "/home/star/anaconda3/envs/my_tf/lib/python2.7/site-packages/tensorflow/python/ops/gradients_impl.py", line 514, in gradients

(op.name, op.type))
LookupError: No gradient defined for operation 'Loufx64_35/forward/VariableLSTM' (op type: VariableLSTM)

Traceback (most recent call last):


 "tests.py", line 26, in test_follow

u1 = User(username='john', email='john@example.com')


 "<string>", line 2, in __init__


 "C:\Users\Marla\AppData\Local\conda\conda\envs\flask-env\lib\site-packages\sqlalchemy\orm\instrumentation.py", line 391, in _new_state_if_none

state = self._state_constructor(instance, self)


 "C:\Users\Marla\AppData\Local\conda\conda\envs\flask-env\lib\site-packages\sqlalchemy\util\langhelpers.py", line 767, in __get__

obj.__dict__[self.__name__] = result = self.fget(obj)


 "C:\Users\Marla\AppData\Local\conda\conda\envs\flask-env\lib\site-packages\sqlalchemy\orm\instrumentation.py", line 221, in _state_constructor

self.dispatch.first_init(self, self.class_)


 "C:\Users\Marla\AppData\Local\conda\conda\envs\flask-env\lib\site-packages\sqlalchemy\event\attr.py", line 284, in __call__

fn(*args, **kw)


 "C:\Users\Marla\AppData\Local\conda\conda\envs\flask-env\lib\site-packages\sqlalchemy\orm\mapper.py", line 3139, in _event_on_first_init

configure_mappers()


 "C:\Users\Marla\AppData\Local\conda\conda\envs\flask-env\lib\site-packages\sqlalchemy\orm\mapper.py", line 3026, in configure_mappers

raise e
sqlalchemy.exc.InvalidRequestError: One or more mappers failed to initialize - can't proceed with initialization of other mappers. Triggering mapper: 'Mapper|User|user'
