Error in step 7. NotFoundError

[hlinkpt]

Testing model on 87070 data rows with 870 steps

---

NotFoundError Traceback (most recent call last)
in
11 predictions = model.predict_generator(
12 generator_strip_xy(data_gen_test, true_values),
---> 13 steps=steps_test
14 )
15

~/anaconda3/envs/JaunkerBot/lib/python3.6/site-packages/keras/legacy/interfaces.py in wrapper(*args, **kwargs)
89 warnings.warn('Update your ' + object_name + ' call to the ' +
90 'Keras 2 API: ' + signature, stacklevel=2)
---> 91 return func(*args, **kwargs)
92 wrapper._original_function = func
93 return wrapper

~/anaconda3/envs/JaunkerBot/lib/python3.6/site-packages/keras/engine/training.py in predict_generator(self, generator, steps, max_queue_size, workers, use_multiprocessing, verbose)
1520 workers=workers,
1521 use_multiprocessing=use_multiprocessing,
-> 1522 verbose=verbose)

~/anaconda3/envs/JaunkerBot/lib/python3.6/site-packages/keras/engine/training_generator.py in predict_generator(model, generator, steps, max_queue_size, workers, use_multiprocessing, verbose)
451 x = generator_output
452
--> 453 outs = model.predict_on_batch(x)
454 outs = to_list(outs)
455

~/anaconda3/envs/JaunkerBot/lib/python3.6/site-packages/keras/engine/training.py in predict_on_batch(self, x)
1272 ins = x
1273 self._make_predict_function()
-> 1274 outputs = self.predict_function(ins)
1275 return unpack_singleton(outputs)
1276

~/anaconda3/envs/JaunkerBot/lib/python3.6/site-packages/keras/backend/tensorflow_backend.py in call(self, inputs)
2713 return self._legacy_call(inputs)
2714
-> 2715 return self._call(inputs)
2716 else:
2717 if py_any(is_tensor(x) for x in inputs):

~/anaconda3/envs/JaunkerBot/lib/python3.6/site-packages/keras/backend/tensorflow_backend.py in _call(self, inputs)
2669 feed_symbols,
2670 symbol_vals,
-> 2671 session)
2672 if self.run_metadata:
2673 fetched = self._callable_fn(*array_vals, run_metadata=self.run_metadata)

~/anaconda3/envs/JaunkerBot/lib/python3.6/site-packages/keras/backend/tensorflow_backend.py in _make_callable(self, feed_arrays, feed_symbols, symbol_vals, session)
2621 callable_opts.run_options.CopyFrom(self.run_options)
2622 # Create callable.
-> 2623 callable_fn = session._make_callable_from_options(callable_opts)
2624 # Cache parameters corresponding to the generated callable, so that
2625 # we can detect future mismatches and refresh the callable.

~/anaconda3/envs/JaunkerBot/lib/python3.6/site-packages/tensorflow/python/client/session.py in _make_callable_from_options(self, callable_options)
1469 """
1470 self._extend_graph()
-> 1471 return BaseSession._Callable(self, callable_options)
1472
1473

~/anaconda3/envs/JaunkerBot/lib/python3.6/site-packages/tensorflow/python/client/session.py in init(self, session, callable_options)
1423 with errors.raise_exception_on_not_ok_status() as status:
1424 self._handle = tf_session.TF_SessionMakeCallable(
-> 1425 session._session, options_ptr, status)
1426 finally:
1427 tf_session.TF_DeleteBuffer(options_ptr)

~/anaconda3/envs/JaunkerBot/lib/python3.6/site-packages/tensorflow/python/framework/errors_impl.py in exit(self, type_arg, value_arg, traceback_arg)
526 None, None,
527 compat.as_text(c_api.TF_Message(self.status.status)),
--> 528 c_api.TF_GetCode(self.status.status))
529 # Delete the underlying status object from memory otherwise it stays alive
530 # as there is a reference to status from this from the traceback due to

NotFoundError: PruneForTargets: Some target nodes not found: group_deps