openai.types.completion_usage.CompletionUsage() argument after ** must be a mapping, not NoneType

[ywhan2003]

My config2.yaml:

api_type: "openai"  # or azure / ollama / open_llm etc. Check LLMType for more options
model: "gpt-4o"  # or gpt-3.5-turbo-1106 / gpt-4-1106-preview
base_url: "https://api.agicto.cn/v1" 

When I execute the following code, I meet some problems:

async def run(self, instruction: str):
        prompt = self.PROMPT_TEMPLATE.format(instruction=instruction)

        rsp = await self._aask(prompt)

        code_text = SimpleWriteCode.parse_code(rsp)

        return code_text

The problem:

2025-02-20 20:13:45.205 | WARNING  | metagpt.utils.common:wrapper:649 - There is a exception in role's execution, in order to resume, we delete the newest role communication message in the role's memory.
Traceback (most recent call last):
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/metagpt/utils/common.py", line 640, in wrapper
    return await func(self, *args, **kwargs)
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/metagpt/roles/role.py", line 550, in run
    rsp = await self.react()
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/metagpt/roles/role.py", line 519, in react
    rsp = await self._act_by_order()
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/metagpt/roles/role.py", line 473, in _act_by_order
    rsp = await self._act()
  File "/home/ubuntu/metagpt_test/test1.py", line 89, in _act
    result = await todo.run(msg.content)
  File "/home/ubuntu/metagpt_test/test1.py", line 30, in run
    rsp = await self._aask(prompt)
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/metagpt/actions/action.py", line 93, in _aask
    return await self.llm.aask(prompt, system_msgs)
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/metagpt/provider/base_llm.py", line 150, in aask
    rsp = await self.acompletion_text(message, stream=stream, timeout=self.get_timeout(timeout))
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/tenacity/_asyncio.py", line 88, in async_wrapped
    return await fn(*args, **kwargs)
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/tenacity/_asyncio.py", line 47, in __call__
    do = self.iter(retry_state=retry_state)
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/tenacity/__init__.py", line 314, in iter
    return fut.result()
  File "/usr/lib/python3.10/concurrent/futures/_base.py", line 451, in result
    return self.__get_result()
  File "/usr/lib/python3.10/concurrent/futures/_base.py", line 403, in __get_result
    raise self._exception
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/tenacity/_asyncio.py", line 50, in __call__
    result = await fn(*args, **kwargs)
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/metagpt/provider/openai_api.py", line 141, in acompletion_text
    return await self._achat_completion_stream(messages, timeout=timeout)
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/metagpt/provider/openai_api.py", line 94, in _achat_completion_stream
    usage = CompletionUsage(**chunk.usage)
TypeError: openai.types.completion_usage.CompletionUsage() argument after ** must be a mapping, not NoneType

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/home/ubuntu/metagpt_test/test1.py", line 105, in <module>
    fire.Fire(main)
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/fire/core.py", line 141, in Fire
    component_trace = _Fire(component, args, parsed_flag_args, context, name)
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/fire/core.py", line 466, in _Fire
    component, remaining_args = _CallAndUpdateTrace(
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/fire/core.py", line 681, in _CallAndUpdateTrace
    component = fn(*varargs, **kwargs)
  File "/home/ubuntu/metagpt_test/test1.py", line 100, in main
    result = asyncio.run(role.run(msg))
  File "/usr/lib/python3.10/asyncio/runners.py", line 44, in run
    return loop.run_until_complete(main)
  File "/usr/lib/python3.10/asyncio/base_events.py", line 649, in run_until_complete
    return future.result()
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/metagpt/utils/common.py", line 662, in wrapper
    raise Exception(format_trackback_info(limit=None))
Exception: Traceback (most recent call last):
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/metagpt/utils/common.py", line 640, in wrapper
    return await func(self, *args, **kwargs)
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/metagpt/roles/role.py", line 550, in run
    rsp = await self.react()
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/metagpt/roles/role.py", line 519, in react
    rsp = await self._act_by_order()
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/metagpt/roles/role.py", line 473, in _act_by_order
    rsp = await self._act()
  File "/home/ubuntu/metagpt_test/test1.py", line 89, in _act
    result = await todo.run(msg.content)
  File "/home/ubuntu/metagpt_test/test1.py", line 30, in run
    rsp = await self._aask(prompt)
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/metagpt/actions/action.py", line 93, in _aask
    return await self.llm.aask(prompt, system_msgs)
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/metagpt/provider/base_llm.py", line 150, in aask
    rsp = await self.acompletion_text(message, stream=stream, timeout=self.get_timeout(timeout))
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/tenacity/_asyncio.py", line 88, in async_wrapped
    return await fn(*args, **kwargs)
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/tenacity/_asyncio.py", line 47, in __call__
    do = self.iter(retry_state=retry_state)
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/tenacity/__init__.py", line 314, in iter
    return fut.result()
  File "/usr/lib/python3.10/concurrent/futures/_base.py", line 451, in result
    return self.__get_result()
  File "/usr/lib/python3.10/concurrent/futures/_base.py", line 403, in __get_result
    raise self._exception
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/tenacity/_asyncio.py", line 50, in __call__
    result = await fn(*args, **kwargs)
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/metagpt/provider/openai_api.py", line 141, in acompletion_text
    return await self._achat_completion_stream(messages, timeout=timeout)
  File "/home/ubuntu/venv1/lib/python3.10/site-packages/metagpt/provider/openai_api.py", line 94, in _achat_completion_stream
    usage = CompletionUsage(**chunk.usage)
TypeError: openai.types.completion_usage.CompletionUsage() argument after ** must be a mapping, not NoneType

How can I fix the bug?