TypeError: can't pickle function objects

[OopsYouDiedE]

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🐛 Describe the bug

I run the script in both 3.7 and 3.9 and there are same problem.

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(minerl) PS E:\Download\muzero-general-master> python muzero.py

Welcome to MuZero! Here's a list of games: 0. atari

1. breakout
2. cartpole
3. connect4
4. gomoku
5. gridworld
6. lunarlander
7. simple_grid
8. spiel
9. tictactoe
10. twentyone Enter a number to choose the game: 2 2022-10-10 16:33:22,009 INFO worker.py:1518 -- Started a local Ray instance. Traceback (most recent call last): File "muzero.py", line 650, in muzero = MuZero(game_name) File "muzero.py", line 96, in init ray.init(num_gpus=total_gpus, ignore_reinit_error=True) File "C:\Users\zznZZ.conda\envs\minerl\lib\site-packages\ray_private\client_mode_hook.py", line 105, in wrapper return func(*args, **kwargs) File "C:\Users\zznZZ.conda\envs\minerl\lib\site-packages\ray_private\worker.py", line 1528, in init job_config=job_config, File "C:\Users\zznZZ.conda\envs\minerl\lib\site-packages\ray_private\worker.py", line 2071, in connect lambda worker_info: sys.path.insert(1, script_directory) File "C:\Users\zznZZ.conda\envs\minerl\lib\site-packages\ray_private\worker.py", line 709, in run_function_on_all_workers pickled_function = pickle.dumps(function) File "C:\Users\zznZZ.conda\envs\minerl\lib\site-packages\ray\cloudpickle\cloudpickle_fast.py", line 73, in dumps cp.dump(obj) File "C:\Users\zznZZ.conda\envs\minerl\lib\site-packages\ray\cloudpickle\cloudpickle_fast.py", line 620, in dump return Pickler.dump(self, obj) File "C:\Users\zznZZ.conda\envs\minerl\lib\site-packages\ray\pickle5_files\pickle5\pickle.py", line 485, in dump self.save(obj) File "C:\Users\zznZZ.conda\envs\minerl\lib\site-packages\ray\pickle5_files\pickle5\pickle.py", line 601, in save self.save_reduce(obj=obj, *rv) File "C:\Users\zznZZ.conda\envs\minerl\lib\site-packages\ray\pickle5_files\pickle5\pickle.py", line 689, in save_reduce save(func) File "C:\Users\zznZZ.conda\envs\minerl\lib\site-packages\ray\pickle5_files\pickle5\pickle.py", line 601, in save self.save_reduce(obj=obj, *rv) File "C:\Users\zznZZ.conda\envs\minerl\lib\site-packages\ray\pickle5_files\pickle5\pickle.py", line 689, in save_reduce save(func) File "C:\Users\zznZZ.conda\envs\minerl\lib\site-packages\ray\pickle5_files\pickle5\pickle.py", line 576, in save rv = reduce(self.proto)

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