Number of ways to split should evenly divide the split dimension, but got split_dim 3 (size = 4) and num_split 3

[qmzpg]

when I run demo.py, it crashes at "output = sess.run([softmax], feed_dict=feed)" with the error called"Number of ways to split should evenly divide the split dimension, but got split_dim 3 (size = 4) and num_split 3

 [[Node: Validation/Processing/split = Split[T=DT_FLOAT, num_split=3, _device="/job:localhost/replica:0/task:0/device:GPU:0"](Validation/Processing/split/split_dim, ExpandDims)]]"