Docs() Conflicts with LiteLLM Models

When I want to use the litellm model, add in the Docs method doesn't seem to work. An error is reported when using this method, prompting me to do an OPENAI_API_KEY definition. But at this time I am trying to use the liteLLM API.

import os

from paperqa import Docs,ask
from paperqa.settings import Settings, AgentSettings, AnswerSettings

local_llm_config = dict(
    model_list=[dict(
        model_name="my_llm_model",
        litellm_params=dict(
            model="gpt-3.5-turbo",
            api_base="https://chatapi.midjourney-vip.cn/v1",
            api_key="sk-d55CRFWuSZtCU6Nv7a3505525a9b4b0f820f215b0545504d",
            temperature=0.1,
            frequency_penalty=1.5,
            max_tokens=512,
        ),
    )]
)
settings = Settings(
    llm="my_llm_model",
    llm_config=local_llm_config,
    summary_llm="my_llm_model",
    summary_llm_config=local_llm_config,
    agent=AgentSettings(agent_llm_config=local_llm_config,
                        agent_llm="my_llm_model",
                        agent_type="ToolSelector"),
    answer=AnswerSettings(evidence_k=3)  # optional
)

doc_paths = ("E:\Programing\pythonProject\myfile.pdf", "E:\Programing\pythonProject\myotherfile.pdf")

docs = Docs()

for doc in doc_paths:
    docs.add(doc)

answer = docs.query(
    "What manufacturing challenges are unique to bispecific antibodies?",
    settings=settings,
)
print(answer.formatted_answer)

error message：

Traceback (most recent call last):
  File "D:\Study\PyCharm 2023.3.3\plugins\python\helpers\pydev\pydevconsole.py", line 364, in runcode
    coro = func()
           ^^^^^^
  File "<input>", line 1, in <module>
  File "D:\Study\PyCharm 2023.3.3\plugins\python\helpers\pydev\_pydev_bundle\pydev_umd.py", line 197, in runfile
    pydev_imports.execfile(filename, global_vars, local_vars)  # execute the script
    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Study\PyCharm 2023.3.3\plugins\python\helpers\pydev\_pydev_imps\_pydev_execfile.py", line 18, in execfile
    exec(compile(contents+"\n", file, 'exec'), glob, loc)
  File "E:\Programing\pythonProject\Paq.py", line 35, in <module>
    docs.add(doc)
  File "D:\Study\Anaconda\envs\Py311\Lib\site-packages\paperqa\docs.py", line 227, in add
    return get_loop().run_until_complete(
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Study\Anaconda\envs\Py311\Lib\asyncio\base_events.py", line 653, in run_until_complete
    return future.result()
           ^^^^^^^^^^^^^^^
  File "D:\Study\Anaconda\envs\Py311\Lib\site-packages\paperqa\docs.py", line 275, in aadd
    result = await llm_model.run_prompt(
             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Study\Anaconda\envs\Py311\Lib\site-packages\paperqa\llms.py", line 182, in run_prompt
    return await self._run_chat(
           ^^^^^^^^^^^^^^^^^^^^^
  File "D:\Study\Anaconda\envs\Py311\Lib\site-packages\paperqa\llms.py", line 235, in _run_chat
    chunk = await self.achat(messages)
            ^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Study\Anaconda\envs\Py311\Lib\site-packages\paperqa\llms.py", line 452, in achat
    response = await self.router.acompletion(self.name, messages)
                     ^^^^^^^^^^^
  File "D:\Study\Anaconda\envs\Py311\Lib\site-packages\paperqa\llms.py", line 421, in router
    self._router = Router(
                   ^^^^^^^
  File "D:\Study\Anaconda\envs\Py311\Lib\site-packages\litellm\router.py", line 346, in __init__
    self.set_model_list(model_list)
  File "D:\Study\Anaconda\envs\Py311\Lib\site-packages\litellm\router.py", line 4016, in set_model_list
    self._create_deployment(
  File "D:\Study\Anaconda\envs\Py311\Lib\site-packages\litellm\router.py", line 3976, in _create_deployment
    deployment = self._add_deployment(deployment=deployment)
                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Study\Anaconda\envs\Py311\Lib\site-packages\litellm\router.py", line 4105, in _add_deployment
    set_client(
  File "D:\Study\Anaconda\envs\Py311\Lib\site-packages\litellm\router_utils\client_initalization_utils.py", line 441, in set_client
    _client = openai.AsyncOpenAI(  # type: ignore
              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "D:\Study\Anaconda\envs\Py311\Lib\site-packages\openai\_client.py", line 319, in __init__
    raise OpenAIError(
openai.OpenAIError: The api_key client option must be set either by passing api_key to the client or by setting the OPENAI_API_KEY environment variable

Future-House / paper-qa

Docs() Conflicts with LiteLLM Models #451