检查其他资源

• 我为这个问题添加了一个非常描述性的标题。
• 我使用集成搜索在LangChain文档中进行了搜索。
• 我使用GitHub搜索查找了一个类似的问题，但没有找到。
• 我确信这是LangChain中的一个错误，而不是我的代码。
• 通过更新到LangChain的最新稳定版本(或特定集成包)无法解决此错误。

示例代码

from langchain_aws import ChatBedrock

from pydantic import BaseModel, Field

class Joke(BaseModel):
    setup: str = Field(description="The setup of the joke")
    punchline: str = Field(description="The punchline to the joke")
    
chat = ChatBedrock(
    model_id="anthropic.claude-3-haiku-20240307-v1:0",
    model_kwargs={"temperature": 0.1},
    region_name="my-region-name",
    credentials_profile_name="my-profile-name",
    streaming=True,
).bind_tools([Joke])

chat.invoke(""tell me a joke")```

### Error Message and Stack Trace (if applicable)

```shell
---------------------------------------------------------------------------
RecursionError                            Traceback (most recent call last)
Cell In[22], [line 1](vscode-notebook-cell:?execution_count=22&line=1)
----> [1](vscode-notebook-cell:?execution_count=22&line=1) chain.invoke("tell me a joke")

File ~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/runnables/base.py:4653, in RunnableBindingBase.invoke(self, input, config, **kwargs)
   [4647](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/runnables/base.py:4647) def invoke(
   [4648](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/runnables/base.py:4648)     self,
   [4649](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/runnables/base.py:4649)     input: Input,
   [4650](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/runnables/base.py:4650)     config: Optional[RunnableConfig] = None,
   [4651](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/runnables/base.py:4651)     **kwargs: Optional[Any],
   [4652](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/runnables/base.py:4652) ) -> Output:
-> [4653](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/runnables/base.py:4653)     return self.bound.invoke(
   [4654](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/runnables/base.py:4654)         input,
   [4655](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/runnables/base.py:4655)         self._merge_configs(config),
   [4656](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/runnables/base.py:4656)         **{**self.kwargs, **kwargs},
   [4657](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/runnables/base.py:4657)     )

File ~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:265, in BaseChatModel.invoke(self, input, config, stop, **kwargs)
    [254](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:254) def invoke(
    [255](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:255)     self,
    [256](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:256)     input: LanguageModelInput,
   (...)
    [260](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:260)     **kwargs: Any,
    [261](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:261) ) -> BaseMessage:
    [262](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:262)     config = ensure_config(config)
    [263](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:263)     return cast(
    [264](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:264)         ChatGeneration,
--> [265](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:265)         self.generate_prompt(
    [266](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:266)             [self._convert_input(input)],
    [267](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:267)             stop=stop,
    [268](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:268)             callbacks=config.get("callbacks"),
    [269](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:269)             tags=config.get("tags"),
    [270](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:270)             metadata=config.get("metadata"),
    [271](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:271)             run_name=config.get("run_name"),
    [272](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:272)             run_id=config.pop("run_id", None),
    [273](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:273)             **kwargs,
    [274](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:274)         ).generations[0][0],
    [275](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:275)     ).message

File ~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:698, in BaseChatModel.generate_prompt(self, prompts, stop, callbacks, **kwargs)
    [690](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:690) def generate_prompt(
    [691](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:691)     self,
    [692](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:692)     prompts: List[PromptValue],
   (...)
    [695](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:695)     **kwargs: Any,
    [696](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:696) ) -> LLMResult:
    [697](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:697)     prompt_messages = [p.to_messages() for p in prompts]
--> [698](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:698)     return self.generate(prompt_messages, stop=stop, callbacks=callbacks, **kwargs)

File ~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:555, in BaseChatModel.generate(self, messages, stop, callbacks, tags, metadata, run_name, run_id, **kwargs)
    [553](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:553)         if run_managers:
    [554](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:554)             run_managers[i].on_llm_error(e, response=LLMResult(generations=[]))
--> [555](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:555)         raise e
    [556](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:556) flattened_outputs = [
    [557](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:557)     LLMResult(generations=[res.generations], llm_output=res.llm_output)  # type: ignore[list-item]
    [558](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:558)     for res in results
    [559](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:559) ]
    [560](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:560) llm_output = self._combine_llm_outputs([res.llm_output for res in results])

File ~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:545, in BaseChatModel.generate(self, messages, stop, callbacks, tags, metadata, run_name, run_id, **kwargs)
    [542](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:542) for i, m in enumerate(messages):
    [543](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:543)     try:
    [544](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:544)         results.append(
--> [545](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:545)             self._generate_with_cache(
    [546](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:546)                 m,
    [547](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:547)                 stop=stop,
    [548](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:548)                 run_manager=run_managers[i] if run_managers else None,
    [549](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:549)                 **kwargs,
    [550](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:550)             )
    [551](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:551)         )
    [552](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:552)     except BaseException as e:
    [553](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:553)         if run_managers:

File ~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:770, in BaseChatModel._generate_with_cache(self, messages, stop, run_manager, **kwargs)
    [768](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:768) else:
    [769](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:769)     if inspect.signature(self._generate).parameters.get("run_manager"):
--> [770](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:770)         result = self._generate(
    [771](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:771)             messages, stop=stop, run_manager=run_manager, **kwargs
    [772](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:772)         )
    [773](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:773)     else:
    [774](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_core/language_models/chat_models.py:774)         result = self._generate(messages, stop=stop, **kwargs)

File ~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:521, in ChatBedrock._generate(self, messages, stop, run_manager, **kwargs)
    [519](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:519) if self.streaming:
    [520](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:520)     response_metadata: List[Dict[str, Any]] = []
--> [521](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:521)     for chunk in self._stream(messages, stop, run_manager, **kwargs):
    [522](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:522)         completion += chunk.text
    [523](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:523)         response_metadata.append(chunk.message.response_metadata)

File ~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:442, in ChatBedrock._stream(self, messages, stop, run_manager, **kwargs)
    [440](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:440) if "claude-3" in self._get_model():
    [441](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:441)     if _tools_in_params({**kwargs}):
--> [442](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:442)         result = self._generate(
    [443](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:443)             messages, stop=stop, run_manager=run_manager, **kwargs
    [444](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:444)         )
    [445](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:445)         message = result.generations[0].message
    [446](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:446)         if isinstance(message, AIMessage) and message.tool_calls is not None:

File ~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:521, in ChatBedrock._generate(self, messages, stop, run_manager, **kwargs)
    [519](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:519) if self.streaming:
    [520](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:520)     response_metadata: List[Dict[str, Any]] = []
--> [521](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:521)     for chunk in self._stream(messages, stop, run_manager, **kwargs):
    [522](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:522)         completion += chunk.text
    [523](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:523)         response_metadata.append(chunk.message.response_metadata)

File ~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:442, in ChatBedrock._stream(self, messages, stop, run_manager, **kwargs)
    [440](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:440) if "claude-3" in self._get_model():
    [441](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:441)     if _tools_in_params({**kwargs}):
--> [442](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:442)         result = self._generate(
    [443](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:443)             messages, stop=stop, run_manager=run_manager, **kwargs
    [444](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:444)         )
    [445](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:445)         message = result.generations[0].message
    [446](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:446)         if isinstance(message, AIMessage) and message.tool_calls is not None:

    [... skipping similar frames: ChatBedrock._generate at line 521 (734 times), ChatBedrock._stream at line 442 (734 times)]

File ~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:521, in ChatBedrock._generate(self, messages, stop, run_manager, **kwargs)
    [519](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:519) if self.streaming:
    [520](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:520)     response_metadata: List[Dict[str, Any]] = []
--> [521](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:521)     for chunk in self._stream(messages, stop, run_manager, **kwargs):
    [522](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:522)         completion += chunk.text
    [523](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:523)         response_metadata.append(chunk.message.response_metadata)

File ~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:442, in ChatBedrock._stream(self, messages, stop, run_manager, **kwargs)
    [440](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:440) if "claude-3" in self._get_model():
    [441](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:441)     if _tools_in_params({**kwargs}):
--> [442](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:442)         result = self._generate(
    [443](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:443)             messages, stop=stop, run_manager=run_manager, **kwargs
    [444](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:444)         )
    [445](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:445)         message = result.generations[0].message
    [446](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:446)         if isinstance(message, AIMessage) and message.tool_calls is not None:

File ~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:517, in ChatBedrock._generate(self, messages, stop, run_manager, **kwargs)
    [514](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:514) llm_output: Dict[str, Any] = {}
    [515](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:515) tool_calls: List[Dict[str, Any]] = []
    [516](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:516) provider_stop_reason_code = self.provider_stop_reason_key_map.get(
--> [517](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:517)     self._get_provider(), "stop_reason"
    [518](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:518) )
    [519](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:519) if self.streaming:
    [520](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/chat_models/bedrock.py:520)     response_metadata: List[Dict[str, Any]] = []

File ~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/llms/bedrock.py:585, in BedrockBase._get_provider(self)
    [583](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/llms/bedrock.py:583) if self.provider:
    [584](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/llms/bedrock.py:584)     return self.provider
--> [585](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/llms/bedrock.py:585) if self.model_id.startswith("arn"):
    [586](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/llms/bedrock.py:586)     raise ValueError(
    [587](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/llms/bedrock.py:587)         "Model provider should be supplied when passing a model ARN as "
    [588](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/llms/bedrock.py:588)         "model_id"
    [589](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/llms/bedrock.py:589)     )
    [591](https://file+.vscode-resource.vscode-cdn.net/Users/tommasodelorenzo/Documents/clients/kontrata/juztina/ai-core/app/~/Documents/clients/kontrata/juztina/ai-core/.venv/lib/python3.12/site-packages/langchain_aws/llms/bedrock.py:591) return self.model_id.split(".")[0]

RecursionError: maximum recursion depth exceeded while calling a Python object```

### Description

- I am trying to stream with tool calling (recently added by Anthropic).
- Setting `streaming = False` works.
- Setting `streaming = True` I get recursion error.
- The same setting works using `ChatAnthropic` class.

### System Info

Python 3.12.1
langchain-anthropic==0.1.19
langchain-aws==0.1.10
langchain-core==0.2.13
langchain-openai==0.1.15
langchain-qdrant==0.1.1