Describe the bug
Hi, I am trying to use unity as environment with SB3 algorithm. I have no problem when running with unity editor or without VecEnv. However, I ran into error when trying to use unity environment with SubporcVecEnv. I got the following error.
Traceback (most recent call last):
File "/media/caig/新增磁碟區/RL-script/main.py", line 76, in <module>
env = create_envs(2)
File "/media/caig/新增磁碟區/RL-script/main.py", line 48, in create_envs
return SubprocVecEnv([create_env(i) for i in range(num_env)])
File "/home/caig/anaconda3/envs/mlagents/lib/python3.10/site-packages/stable_baselines3/common/vec_env/subproc_vec_env.py", line 114, in __init__
process.start()
File "/home/caig/anaconda3/envs/mlagents/lib/python3.10/multiprocessing/process.py", line 121, in start
self._popen = self._Popen(self)
File "/home/caig/anaconda3/envs/mlagents/lib/python3.10/multiprocessing/context.py", line 300, in _Popen
return Popen(process_obj)
File "/home/caig/anaconda3/envs/mlagents/lib/python3.10/multiprocessing/popen_forkserver.py", line 35, in __init__
super().__init__(process_obj)
File "/home/caig/anaconda3/envs/mlagents/lib/python3.10/multiprocessing/popen_fork.py", line 19, in __init__
self._launch(process_obj)
File "/home/caig/anaconda3/envs/mlagents/lib/python3.10/multiprocessing/popen_forkserver.py", line 47, in _launch
reduction.dump(process_obj, buf)
File "/home/caig/anaconda3/envs/mlagents/lib/python3.10/multiprocessing/reduction.py", line 60, in dump
ForkingPickler(file, protocol).dump(obj)
File "/home/caig/anaconda3/envs/mlagents/lib/python3.10/site-packages/stable_baselines3/common/vec_env/base_vec_env.py", line 479, in __getstate__
return cloudpickle.dumps(self.var)
File "/home/caig/anaconda3/envs/mlagents/lib/python3.10/site-packages/cloudpickle/cloudpickle.py", line 1479, in dumps
cp.dump(obj)
File "/home/caig/anaconda3/envs/mlagents/lib/python3.10/site-packages/cloudpickle/cloudpickle.py", line 1245, in dump
return super().dump(obj)
TypeError: cannot pickle '_thread.lock' object
Describe the bug Hi, I am trying to use unity as environment with SB3 algorithm. I have no problem when running with unity editor or without VecEnv. However, I ran into error when trying to use unity environment with SubporcVecEnv. I got the following error.
The code I'm trying to run:
System Info