# LLM
llm = ChatOllama(model=local_llm, format="json", temperature=0)

...

retrieval_grader = prompt | llm | JsonOutputParser()
question = "agent memory"
docs = retriever.invoke(question)
doc_txt = docs[1].page_content
print(retrieval_grader.invoke({"question": question, "document": doc_txt}))

<ipython-input-5-e076046ccc4a>:8: LangChainDeprecationWarning: The class `ChatOllama` was deprecated in LangChain 0.3.1 and will be removed in 1.0.0. An updated version of the class exists in the :class:`~langchain-ollama package and should be used instead. To use it run `pip install -U :class:`~langchain-ollama` and import as `from :class:`~langchain_ollama import ChatOllama``.
  llm = ChatOllama(model=local_llm, format="json", temperature=0)
---------------------------------------------------------------------------
ConnectionRefusedError                    Traceback (most recent call last)
[/usr/local/lib/python3.11/dist-packages/urllib3/connection.py](https://localhost:8080/#) in _new_conn(self)
    197         try:
--> 198             sock = connection.create_connection(
    199                 (self._dns_host, self.port),

27 frames
ConnectionRefusedError: [Errno 111] Connection refused

The above exception was the direct cause of the following exception:

NewConnectionError                        Traceback (most recent call last)
NewConnectionError: <urllib3.connection.HTTPConnection object at 0x7a106ccf5390>: Failed to establish a new connection: [Errno 111] Connection refused

The above exception was the direct cause of the following exception:

MaxRetryError                             Traceback (most recent call last)
MaxRetryError: HTTPConnectionPool(host='localhost', port=11434): Max retries exceeded with url: /api/chat (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7a106ccf5390>: Failed to establish a new connection: [Errno 111] Connection refused'))

During handling of the above exception, another exception occurred:

ConnectionError                           Traceback (most recent call last)
[/usr/local/lib/python3.11/dist-packages/requests/adapters.py](https://localhost:8080/#) in send(self, request, stream, timeout, verify, cert, proxies)
    698                 raise SSLError(e, request=request)
    699 
--> 700             raise ConnectionError(e, request=request)
    701 
    702         except ClosedPoolError as e:

ConnectionError: HTTPConnectionPool(host='localhost', port=11434): Max retries exceeded with url: /api/chat (Caused by NewConnectionError('<urllib3.connection.HTTPConnection object at 0x7a106ccf5390>: Failed to establish a new connection: [Errno 111] Connection refused'))