AttributeError: 'Message' object has no attribute 'restricted_to'

[lizhongv]

 python start_game.py
2024-05-31 02:42:33.932 | INFO     | metagpt.const:get_metagpt_package_root:29 - Package root set to /data0/lizhong/MetaGPT
2024-05-31 02:42:39.139 | INFO     | __main__:start_game:34 - Game setup:
Player1: Villager,
Player2: Werewolf,
Player3: Seer,
Player4: Guard,
Player5: Villager,
Player6: Werewolf,
Player7: Witch,
2024-05-31 02:42:39.165 | INFO     | metagpt.team:invest:93 - Investment: $20.0.
2024-05-31 02:42:39.172 | ERROR    | metagpt.utils.common:wrapper:631 - Exception occurs, start to serialize the project, exp:
Traceback (most recent call last):
  File "/data0/lizhong/MetaGPT/metagpt/utils/common.py", line 640, in wrapper
    return await func(self, *args, **kwargs)
  File "/data0/lizhong/MetaGPT/metagpt/roles/role.py", line 545, in run
    if not await self._observe():
AttributeError: 'Message' object has no attribute 'restricted_to'

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/data0/lizhong/MetaGPT/metagpt/utils/common.py", line 626, in wrapper
    result = await func(self, *args, **kwargs)
  File "/data0/lizhong/MetaGPT/metagpt/team.py", line 131, in run
    await self.env.run()
Exception: Traceback (most recent call last):
  File "/data0/lizhong/MetaGPT/metagpt/utils/common.py", line 640, in wrapper
    return await func(self, *args, **kwargs)
  File "/data0/lizhong/MetaGPT/metagpt/roles/role.py", line 545, in run
    if not await self._observe():
  File "/data0/lizhong/MetaGPT/metagpt/ext/werewolf/roles/base_player.py", line 63, in _observe
    if len(m.restricted_to) and self.profile not in m.restricted_to and self.name not in m.restricted_to:
  File "/data0/lizhong/anaconda3/envs/cu117-pt2.0/lib/python3.10/site-packages/pydantic/main.py", line 811, in __getattr__
    raise AttributeError(f'{type(self).__name__!r} object has no attribute {item!r}')
AttributeError: 'Message' object has no attribute 'restricted_to'

Traceback (most recent call last):
  File "/data0/lizhong/MetaGPT/examples/werewolf_game/start_game.py", line 68, in <module>
    fire.Fire(main)
  File "/data0/lizhong/anaconda3/envs/cu117-pt2.0/lib/python3.10/site-packages/fire/core.py", line 141, in Fire
    component_trace = _Fire(component, args, parsed_flag_args, context, name)
  File "/data0/lizhong/anaconda3/envs/cu117-pt2.0/lib/python3.10/site-packages/fire/core.py", line 466, in _Fire
    component, remaining_args = _CallAndUpdateTrace(
  File "/data0/lizhong/anaconda3/envs/cu117-pt2.0/lib/python3.10/site-packages/fire/core.py", line 681, in _CallAndUpdateTrace
    component = fn(*varargs, **kwargs)
  File "/data0/lizhong/MetaGPT/examples/werewolf_game/start_game.py", line 53, in main
    asyncio.run(
  File "/data0/lizhong/anaconda3/envs/cu117-pt2.0/lib/python3.10/asyncio/runners.py", line 44, in run
    return loop.run_until_complete(main)
  File "/data0/lizhong/anaconda3/envs/cu117-pt2.0/lib/python3.10/asyncio/base_events.py", line 649, in run_until_complete
    return future.result()
  File "/data0/lizhong/MetaGPT/examples/werewolf_game/start_game.py", line 40, in start_game
    await game.run(n_round=n_round)
  File "/data0/lizhong/MetaGPT/metagpt/utils/common.py", line 632, in wrapper
    self.serialize()  # Team.serialize
  File "/data0/lizhong/MetaGPT/metagpt/team.py", line 62, in serialize
    write_json_file(team_info_path, serialized_data)
  File "/data0/lizhong/MetaGPT/metagpt/utils/common.py", line 581, in write_json_file
    json.dump(data, fout, ensure_ascii=False, indent=indent, default=to_jsonable_python)
  File "/data0/lizhong/anaconda3/envs/cu117-pt2.0/lib/python3.10/json/__init__.py", line 179, in dump
    for chunk in iterable:
  File "/data0/lizhong/anaconda3/envs/cu117-pt2.0/lib/python3.10/json/encoder.py", line 431, in _iterencode
    yield from _iterencode_dict(o, _current_indent_level)
  File "/data0/lizhong/anaconda3/envs/cu117-pt2.0/lib/python3.10/json/encoder.py", line 405, in _iterencode_dict
    yield from chunks
  File "/data0/lizhong/anaconda3/envs/cu117-pt2.0/lib/python3.10/json/encoder.py", line 405, in _iterencode_dict
    yield from chunks
  File "/data0/lizhong/anaconda3/envs/cu117-pt2.0/lib/python3.10/json/encoder.py", line 405, in _iterencode_dict
    yield from chunks
  [Previous line repeated 1 more time]
  File "/data0/lizhong/anaconda3/envs/cu117-pt2.0/lib/python3.10/json/encoder.py", line 325, in _iterencode_list
    yield from chunks
  File "/data0/lizhong/anaconda3/envs/cu117-pt2.0/lib/python3.10/json/encoder.py", line 438, in _iterencode
    o = _default(o)
pydantic_core._pydantic_core.PydanticSerializationError: Unable to serialize unknown type: <class 'pydantic._internal._model_construction.ModelMetaclass'>

When running the werewolf killing agent, the error in the above image appears. How can I solve it?

[lizhongv]

pydantic                                 2.7.2
pydantic_core                            2.18.3

[Kaushal-26]

It is breaking, due to this message of metagpt.roles.Role._react function: https://github.com/geekan/MetaGPT/blob/bc1cd11a4b284e509056cc0052ec52d20568a4ab/metagpt/roles/role.py#L466

As, role.rc.react_mode of all roles is RoleReactMode.REACT

---

But even after changing Message to WwMessage code is not printing anything after this line:

2024-06-02 20:35:05.483 | INFO     | metagpt.team:invest:93 - Investment: $20.0.

---

Solution: role._think() should return True if self.rc.todo is not None.

[garylin2099]

Hi, thanks for reporting the issue! The error is due to the removal of Message.restricted_to in newer versions of the core metagpt code. The solution is to customize a GameMessage(Message) in werewolf folder with the attribute. @lizhongv @Kaushal-26 Are you guys interested in making a PR to fix it? It will be wonderful if so!

[Kaushal-26]

Hi, thanks for reporting the issue! The error is due to the removal of Message.restricted_to in newer versions of the core metagpt code. The solution is to customize a GameMessage(Message) in werewolf folder with the attribute. @lizhongv @Kaushal-26 Are you guys interested in making a PR to fix it? It will be wonderful if so!

I think this customized game message is implemented here: https://github.com/geekan/MetaGPT/blob/46cc9b8c68cd1e13694ed5cf406ef6066ce761ab/metagpt/ext/werewolf/schema.py#L26

The issue will be solved, as you said if we always return True.

Made changes in that pull.

[garylin2099]

Thank you @Kaushal-26 for your PR. Please check again @lizhongv

[yingfeng2016]

Moderator、Werewolf、Witch，These three roles cover _think methods and also require return self.rc.todo is not None !

[better629]

Since no further responses are needed, we will close it. Please reopen it if necessary.