我正在尝试使用这个工具包来掌握在模拟中创建机器学习代理的窍门。它似乎是最简单的一个，所以我遵循了一个叫做CodeMonkey的频道的教程。有人知道这里出了什么问题吗？（https://www.youtube.com/watchv=zPFU30tbyKs&ab_channel=CodeMonkey）。
'''

Traceback (most recent call last):
  File "/usr/local/bin/mlagents-learn", line 5, in <module>
    from mlagents.trainers.learn import main
  File "/usr/local/lib/python3.9/site-packages/mlagents/trainers/learn.py", line 2, in <module>
    from mlagents import torch_utils
  File "/usr/local/lib/python3.9/site-packages/mlagents/torch_utils/__init__.py", line 1, in <module>
    from mlagents.torch_utils.torch import torch as torch  # noqa
  File "/usr/local/lib/python3.9/site-packages/mlagents/torch_utils/torch.py", line 6, in <module>
    from mlagents.trainers.settings import TorchSettings
  File "/usr/local/lib/python3.9/site-packages/mlagents/trainers/settings.py", line 644, in <module>
    class TrainerSettings(ExportableSettings):
  File "/usr/local/lib/python3.9/site-packages/mlagents/trainers/settings.py", line 667, in TrainerSettings
    cattr.register_structure_hook(
  File "/usr/local/lib/python3.9/site-packages/cattr/converters.py", line 207, in register_structure_hook
    self._structure_func.register_cls_list([(cl, func)])
  File "/usr/local/lib/python3.9/site-packages/cattr/dispatch.py", line 55, in register_cls_list
    self._single_dispatch.register(cls, handler)
  File "/usr/local/Cellar/python@3.9/3.9.12/Frameworks/Python.framework/Versions/3.9/lib/python3.9/functools.py", line 855, in register
    raise TypeError(
TypeError: Invalid first argument to `register()`. typing.Dict[mlagents.trainers.settings.RewardSignalType, mlagents.trainers.settings.RewardSignalSettings] is not a class.

'''