InvalidArgumentError: buffer_size must be greater than zero.

[hablee]

Hi, thank you for the repo. Whenever I come to the train.py step, it came the buffer_size error. tensorflow.python.framework.errors_impl.InvalidArgumentError: buffer_size must be greater than zero. [Op:ShuffleAndRepeatDataset]
What does that mean, I followed the instructions step by step. I donot know what to to, can you give some suggestions or is there any other clear repo about train gan based on one's own images? Thank you!