Get InvalidArgumentError (see above for traceback): You must feed a value for placeholder tensor 'Placeholder' with dtype bool

[xjwxjw]

The tensorflow version I use is 0.12.0.
I run the main.py with: python main.py --logs_dir=logs/CelebA_WGAN_logs2/ --optimizer=RMSProp --learning_rate=5e-5 --optimizer_param=0.9 --model=1 --iterations=1e5 --mode=visualize
It shows the following error:

Traceback (most recent call last):
File "main.py", line 52, in
tf.app.run()
File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/platform/app.py", line 43, in run
sys.exit(main(sys.argv[:1] + flags_passthrough))
File "main.py", line 43, in main
model.initialize_network(FLAGS.logs_dir)
File "/home/xujingwei/WassersteinGAN.tensorflow/models/GAN_models.py", line 225, in initialize_network
self.sess.run(tf.global_variables_initializer())
File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/client/session.py", line 766, in run
run_metadata_ptr)
File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/client/session.py", line 964, in _run
feed_dict_string, options, run_metadata)
File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/client/session.py", line 1014, in _do_run
target_list, options, run_metadata)
File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/client/session.py", line 1034, in _do_call
raise type(e)(node_def, op, message)
tensorflow.python.framework.errors_impl.InvalidArgumentError: You must feed a value for placeholder tensor 'Placeholder' with dtype bool
[[Node: Placeholder = Placeholderdtype=DT_BOOL, shape=[], _device="/job:localhost/replica:0/task:0/gpu:0"]]

Caused by op u'Placeholder', defined at:
File "main.py", line 52, in
tf.app.run()
File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/platform/app.py", line 43, in run
sys.exit(main(sys.argv[:1] + flags_passthrough))
File "main.py", line 41, in main
FLAGS.optimizer_param)
File "/home/xujingwei/WassersteinGAN.tensorflow/models/GAN_models.py", line 173, in create_network
self._setup_placeholder()
File "/home/xujingwei/WassersteinGAN.tensorflow/models/GAN_models.py", line 149, in _setup_placeholder
self.train_phase = tf.placeholder(tf.bool)
File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/ops/array_ops.py", line 1587, in placeholder
name=name)
File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/ops/gen_array_ops.py", line 2043, in _placeholder
name=name)
File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/framework/op_def_library.py", line 759, in apply_op
op_def=op_def)
File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/framework/ops.py", line 2240, in create_op
original_op=self._default_original_op, op_def=op_def)
File "/usr/local/lib/python2.7/dist-packages/tensorflow/python/framework/ops.py", line 1128, in init
self._traceback = _extract_stack()

InvalidArgumentError (see above for traceback): You must feed a value for placeholder tensor 'Placeholder' with dtype bool
[[Node: Placeholder = Placeholderdtype=DT_BOOL, shape=[], _device="/job:localhost/replica:0/task:0/gpu:0"]]

Does anyone has any idea about it? Much thanks!