ZeroDivisionError: float division by zero issue

[kimbring2]

When I run a dqfd code by a 'python train_dqfd.py
--env MineRLTreechop-v0 --expert-demo-path ./expert_dataset/MineRLTreechop-v0/
--frame-skip 4 --frame-stack 4 --gpu 0 --lr 6.25e-5 --minibatch-size 32
--n-experts 16 --use-noisy-net before-pretraining', I got a error message.

I try to correct a that issue myself. But I can not solve yet.

[kimbring2]

Oh, I solve it myself. I change a path for expert dataset to my computer real data path.