[ERROR]can't train the model using python ppo_single_large_hiar.py train

[Zurora]

I met an issue while running python ppo_single_large_hiar.py train
firstly, I start ray through ray start --address='192.168.1.203:6379' (I'm not sure if it's right cause I never use ray before) , then run python ppo_single_large_hiar.py train
It shows the following error messages:

How can I fix the error?