Traceback (most recent call last):
  File "open_cv_test.py", line 70, in <module>
    hooks=[logging_hook])
  File "/usr/lib/python3.6/site-packages/tensorflow/python/estimator/estimator.py", line 355, in train
    loss = self._train_model(input_fn, hooks, saving_listeners)
  File "/usr/lib/python3.6/site-packages/tensorflow/python/estimator/estimator.py", line 824, in _train_model
    features, labels, model_fn_lib.ModeKeys.TRAIN, self.config)
  File "/usr/lib/python3.6/site-packages/tensorflow/python/estimator/estimator.py", line 805, in _call_model_fn
    model_fn_results = self._model_fn(features=features, **kwargs)
  File "/home/radkye/Documents/studia/ASLRecognizer/cnn/cnn_model.py", line 18, in cnn_model_fn
    activation=tf.nn.relu)
  File "/usr/lib/python3.6/site-packages/tensorflow/python/layers/convolutional.py", line 619, in conv2d
    return layer.apply(inputs)
  File "/usr/lib/python3.6/site-packages/tensorflow/python/layers/base.py", line 825, in apply
    return self.__call__(inputs, *args, **kwargs)
  File "/usr/lib/python3.6/site-packages/tensorflow/python/layers/base.py", line 696, in __call__
    self.build(input_shapes)
  File "/usr/lib/python3.6/site-packages/tensorflow/python/layers/convolutional.py", line 144, in build
    dtype=self.dtype)
  File "/usr/lib/python3.6/site-packages/tensorflow/python/layers/base.py", line 546, in add_variable
    partitioner=partitioner)
  File "/usr/lib/python3.6/site-packages/tensorflow/python/training/checkpointable.py", line 415, in _add_variable_with_custom_getter
    **kwargs_for_getter)
  File "/usr/lib/python3.6/site-packages/tensorflow/python/ops/variable_scope.py", line 1297, in get_variable
    constraint=constraint)
  File "/usr/lib/python3.6/site-packages/tensorflow/python/ops/variable_scope.py", line 1093, in get_variable
    constraint=constraint)
  File "/usr/lib/python3.6/site-packages/tensorflow/python/ops/variable_scope.py", line 439, in get_variable
    constraint=constraint)
  File "/usr/lib/python3.6/site-packages/tensorflow/python/ops/variable_scope.py", line 408, in _true_getter
    use_resource=use_resource, constraint=constraint)
  File "/usr/lib/python3.6/site-packages/tensorflow/python/ops/variable_scope.py", line 773, in _get_single_variable
    name=name, shape=shape, dtype=dtype)
  File "/usr/lib/python3.6/site-packages/tensorflow/python/ops/variable_scope.py", line 853, in _get_default_initializer
    % (name, dtype.base_dtype))
ValueError: An initializer for variable conv2d/kernel of <dtype: 'string'> is required