running error in windows

[Wjzsearcher]

Hi, I met an error when I ran the demo walk, the rex-gym has successfully installed on my windows.
Could you please tell me how to solve this problem?
Thank you!

PS F:\program_study\quadruped_robot\rex-gym> rex-gym policy --env walk
pybullet build time: Oct 24 2021 14:53:06
RuntimeError: module compiled against API version 0xe but this version of numpy is 0xd
Traceback (most recent call last):
  File "E:\program\Anaconda3\envs\pytorch\lib\runpy.py", line 193, in _run_module_as_main
    "__main__", mod_spec)
  File "E:\program\Anaconda3\envs\pytorch\lib\runpy.py", line 85, in _run_code
    exec(code, run_globals)
  File "E:\program\Anaconda3\envs\pytorch\Scripts\rex-gym.exe\__main__.py", line 7, in <module>
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\click\core.py", line 1137, in __call__
    return self.main(*args, **kwargs)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\click\core.py", line 1062, in main
    rv = self.invoke(ctx)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\click\core.py", line 1668, in invoke
    return _process_result(sub_ctx.command.invoke(sub_ctx))
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\click\core.py", line 1404, in invoke
    return ctx.invoke(self.callback, **ctx.params)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\click\core.py", line 763, in invoke
    return __callback(*args, **kwargs)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\rex_gym\cli\entry_point.py", line 31, in policy
    PolicyPlayer(env, args, signal_type).play()
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\rex_gym\playground\policy_player.py", line 29, in play
    config = utility.load_config(policy_dir)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\rex_gym\agents\scripts\utility.py", line 197, in load_config
    config = yaml.load(file_)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\main.py", line 951, in load
    return loader._constructor.get_single_data()
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 113, in get_single_data
    return self.construct_document(node)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 118, in construct_document
    data = self.construct_object(node)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 146, in construct_object
    data = self.construct_non_recursive_object(node)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 183, in construct_non_recursive_obje
ct
    data = constructor(self, tag_suffix, node)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 1013, in construct_python_object_new

    return self.construct_python_object_apply(suffix, node, newobj=True)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 995, in construct_python_object_appl
y
    value = self.construct_mapping(node, deep=True)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 440, in construct_mapping
    return BaseConstructor.construct_mapping(self, node, deep=deep)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 255, in construct_mapping
    value = self.construct_object(value_node, deep=deep)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 146, in construct_object
    data = self.construct_non_recursive_object(node)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 188, in construct_non_recursive_obje
ct
    for _dummy in generator:
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 723, in construct_yaml_map
    value = self.construct_mapping(node)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 440, in construct_mapping
    return BaseConstructor.construct_mapping(self, node, deep=deep)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 255, in construct_mapping
    value = self.construct_object(value_node, deep=deep)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 146, in construct_object
    data = self.construct_non_recursive_object(node)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 183, in construct_non_recursive_obje
ct
    data = constructor(self, tag_suffix, node)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 995, in construct_python_object_appl
y
    value = self.construct_mapping(node, deep=True)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 440, in construct_mapping
    return BaseConstructor.construct_mapping(self, node, deep=deep)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 255, in construct_mapping
    value = self.construct_object(value_node, deep=deep)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 146, in construct_object
    data = self.construct_non_recursive_object(node)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 188, in construct_non_recursive_obje
ct
    for _dummy in generator:
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 717, in construct_yaml_seq
    data.extend(self.construct_sequence(node))
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 211, in construct_sequence
    return [self.construct_object(child, deep=deep) for child in node.value]
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 211, in <listcomp>
    return [self.construct_object(child, deep=deep) for child in node.value]
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 146, in construct_object
    data = self.construct_non_recursive_object(node)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 183, in construct_non_recursive_obje
ct
    data = constructor(self, tag_suffix, node)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 913, in construct_python_name
    return self.find_python_name(suffix, node.start_mark)
  File "E:\program\Anaconda3\envs\pytorch\lib\site-packages\ruamel\yaml\constructor.py", line 898, in find_python_name
    mark,
ruamel.yaml.constructor.ConstructorError: while constructing a Python object
cannot find 'walk_env.RexWalkEnv' in the module 'rex_gym.envs.gym'
  in "E:\program\Anaconda3\envs\pytorch\lib\site-packages\rex_gym/policies/walk/ik\config.yaml", line 7, column 7
``