ckpt = tf.train.get_checkpoint_state(checkpoint_dir) return None

[minborin]

I ran this project on ubuntu server 16.04. I installed this below requirements for this project tensorflow==1.14.0 keras==2.2.5 matplotlib==3.1.1 Pillow==6.1.0 scipy==1.1.0

I just cloned this project and then ran as the instruction in README.md file by following command: python main.py --phase train --dataset tiny --res_n 18 --lr 0.1. After ran for a while encountered this issue [*] Failed to find a checkpoint . The error came from this statement tf.train.get_checkpoint_state(checkpoint_dir). So what is the correct argument

checkpiont_dir

for this function?