Commonroad-RL error of train_model.py

CommonRoad-RL
1

Hello, I am learning about commonroad-rl, and I am using the ubuntu, python3.7, and VS code platforms. Then, when I wanted to train the model using train_model.py, that is, when I entered the following command: python /home/bx/桌面/commonroad-rl/commonroad_rl/train_model.py --env=‘commonroad-v1’ --algo=ppo2 --n_envs=4 -n=100000 --save-freq=50000 --seed=0 --save_path=‘/home/bx/桌面/model’. After entering this command, the following error occurred (The error log is a bit long, so I’ve listed the key errors. ):

IndexError: Cannot choose from an empty sequence
[INFO] commonroad_rl.gym_commonroad.commonroad_env - Testing on /home/bx/桌面/commonroad-rl/pickles/problem_test/2 with 0 scenarios
[INFO] commonroad_rl.gym_commonroad.commonroad_env - Testing on /home/bx/桌面/commonroad-rl/pickles/problem_test/3 with 0 scenarios
[INFO] commonroad_rl.gym_commonroad.commonroad_env - Testing on /home/bx/桌面/commonroad-rl/pickles/problem_test/0 with 0 scenarios
[INFO] commonroad_rl.gym_commonroad.commonroad_env - Testing on /home/bx/桌面/commonroad-rl/pickles/problem_test/1 with 0 scenarios

It says that no scenarios were found, but my.pickle files all exist. This problem has been bothering me for a long time, and I hope someone can help me!

2

I have encountered this error before and this is because problem_test/2, problem_test/3 , … are empty folders , you should separate the data into subfolders according to the number of env you want to use like in tutorial1 step7 :

``!python -m commonroad_rl.tools.pickle_scenario.copy_files -i tutorials/data/highD/pickles/problem_train -o tutorials/data/highD/pickles/problem_train -f *.pickle -n 5  `

`!python -m commonroad_rl.tools.pickle_scenario.copy_files -i tutorials/data/highD/pickles/problem_test -o tutorials/data/highD/pickles/problem_test -f *.pickle -n 5 ``