I am trying to connect ollama Llama2 with crew ai, and i am getting "openai.NotFoundError: 404 page not found"

in .env i have below values
OPENAI_API_BASE=http://localhost:11434/v1 OPENAI_MODEL_NAME=llama2 OPENAI_API_KEY=NA

in main file, i have below line to connect

from langchain_openai import ChatOpenAI

llm = ChatOpenAI(
    model="llama2",
    base_url="http://localhost:11434/v1"
)

i am trying to create a sample crew ai which is connecting with Local LLM,

Note: i installed Local LLM Ollama llama2 succesfully and i can able to run the llm without any issue.
but while connecting with crew ai i am getting error

Below i have detailed error message:

Traceback (most recent call last):
  File "D:crew_aicrew.py", line 114, in <module>
    result = crew.kickoff()
             ^^^^^^^^^^^^^^
  File "D:crew_ai.my_crew_envLibsite-packagescrewaicrew.py", line 252, in kickoff
    result = self._run_sequential_process()
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:crew_ai.my_crew_envLibsite-packagescrewaicrew.py", line 293, in _run_sequential_process
    output = task.execute(context=task_output)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:crew_ai.my_crew_envLibsite-packagescrewaitask.py", line 173, in execute
    result = self._execute(
             ^^^^^^^^^^^^^^
  File "D:crew_ai.my_crew_envLibsite-packagescrewaitask.py", line 182, in _execute
    result = agent.execute_task(
             ^^^^^^^^^^^^^^^^^^^
  File "D:crew_ai.my_crew_envLibsite-packagescrewaiagent.py", line 207, in execute_task
    memory = contextual_memory.build_context_for_task(task, context)
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:crew_ai.my_crew_envLibsite-packagescrewaimemorycontextualcontextual_memory.py", line 22, in build_context_for_task
    context.append(self._fetch_stm_context(query))
                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:crew_ai.my_crew_envLibsite-packagescrewaimemorycontextualcontextual_memory.py", line 31, in _fetch_stm_context
    stm_results = self.stm.search(query)
                  ^^^^^^^^^^^^^^^^^^^^^^
  File "D:crew_ai.my_crew_envLibsite-packagescrewaimemoryshort_termshort_term_memory.py", line 23, in search
    return self.storage.search(query=query, score_threshold=score_threshold)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:crew_ai.my_crew_envLibsite-packagescrewaimemorystoragerag_storage.py", line 90, in search
    else self.app.search(query, limit)
         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:crew_ai.my_crew_envLibsite-packagesembedchainembedchain.py", line 635, in search
    return [{"context": c[0], "metadata": c[1]} for c in self.db.query(**params)]
                                                         ^^^^^^^^^^^^^^^^^^^^^^^
  File "D:crew_ai.my_crew_envLibsite-packagesembedchainvectordbchroma.py", line 220, in query
    result = self.collection.query(
             ^^^^^^^^^^^^^^^^^^^^^^
  File "D:crew_ai.my_crew_envLibsite-packageschromadbapimodelsCollection.py", line 327, in query
    valid_query_embeddings = self._embed(input=valid_query_texts)
                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:crew_ai.my_crew_envLibsite-packageschromadbapimodelsCollection.py", line 633, in _embed
    return self._embedding_function(input=input)
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:crew_ai.my_crew_envLibsite-packageschromadbapitypes.py", line 193, in __call__
    result = call(self, input)
             ^^^^^^^^^^^^^^^^^
  File "D:crew_ai.my_crew_envLibsite-packageschromadbutilsembedding_functions.py", line 188, in __call__
    embeddings = self._client.create(
                 ^^^^^^^^^^^^^^^^^^^^
  File "D:crew_ai.my_crew_envLibsite-packagesopenairesourcesembeddings.py", line 113, in create
    return self._post(
           ^^^^^^^^^^^
  File "D:crew_ai.my_crew_envLibsite-packagesopenai_base_client.py", line 1232, in post
    return cast(ResponseT, self.request(cast_to, opts, stream=stream, stream_cls=stream_cls))
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:crew_ai.my_crew_envLibsite-packagesopenai_base_client.py", line 921, in request
    return self._request(
           ^^^^^^^^^^^^^^
  File "D:crew_ai.my_crew_envLibsite-packagesopenai_base_client.py", line 1012, in _request
    raise self._make_status_error_from_response(err.response) from None
openai.NotFoundError: 404 page not found