rl_panda_pickup_cube.py training hanged

[victorming666]

I run rl_panda_pickup_cube.py with 'TRAIN=True', but the process exited with error "broken pipe", and the whole system hanged up.

[victorming666]

OS: Ubuntu 24.04 64bit
Mem: DDR5 64GB
GPU: Geforce RTX-5070ti 16GB

[victorming]

Traceback (most recent call last):
File "/home/zonesion/.local/share/uv/python/cpython-3.11.13-linux-x86_64-gnu/lib/python3.11/multiprocessing/process.py", line 314, in _bootstrap
self.run()
File "/home/zonesion/.local/share/uv/python/cpython-3.11.13-linux-x86_64-gnu/lib/python3.11/multiprocessing/process.py", line 108, in run
self._target(*self._args, **self._kwargs)
File "/home/zonesion/ros_workspace/mujoco-learning/.venv/lib/python3.11/site-packages/stable_baselines3/common/vec_env/subproc_vec_env.py", line 55, in _worker
remote.send((env.observation_space, env.action_space))
File "/home/zonesion/.local/share/uv/python/cpython-3.11.13-linux-x86_64-gnu/lib/python3.11/multiprocessing/connection.py", line 206, in send
self._send_bytes(_ForkingPickler.dumps(obj))
File "/home/zonesion/.local/share/uv/python/cpython-3.11.13-linux-x86_64-gnu/lib/python3.11/multiprocessing/connection.py", line 427, in _send_bytes
self._send(header + buf)
File "/home/zonesion/.local/share/uv/python/cpython-3.11.13-linux-x86_64-gnu/lib/python3.11/multiprocessing/connection.py", line 384, in _send
n = write(self._handle, buf)
^^^^^^^^^^^^^^^^^^^^^^^^
BrokenPipeError: [Errno 32] Broken pipe