fastapi 错误：AssertionError：状态代码 204 不得有响应正文

问：

我使用 FastAPI 有以下代码：

@router.put(
    "/api/v1/me/language",
    tags=["users"],
    responses={
        400: {"model": BadRequest},
        401: {"model": Unauthorized},
        403: {"model": Forbidden},
        404: {"model": NotFound},
        500: {"model": InternalServerError}
    },
    response_class=fastapi.responses.ORJSONResponse,
    status_code=204,
)
async def patch_me_users_language(
    request: Request, session=fastapi.Depends(get_db)
) -> NO_CONTENT_RESPONSE:
    content_bytes = await request.body()
    content = content_bytes.decode("utf-8").upper()

    if content in set(COUNTRIES):
        db_result = DBUser.get_by_uuid(
            request.state.user_uuid, session
        )
        if db_result:
            try:
                db_result.update({"language": content}, session)
                # Tried it already with 'return Response(status_code=HTTP_204_NO_CONTENT.value)'
                return
            except pydantic.error_wrappers.ValidationError as e:
                return http_err.UnprocessableEntity(detail=e.errors()).render()
        else:
            return http_err.InternalServerError(
                detail=f"User for this valid token does not exist."
            ).render()
    else:
        return http_err.UnprocessableEntity(
            detail=[
                {
                    "loc": ["body"],
                    "msg": "Expected the content to contain a valid language/country code",
                    "type": "value_error",
                }
            ]
        ).render()

其中是子类的实例，定义如下：http_errHttpErrors

class HttpErrors(pydantic.BaseModel):
    """
    Base class for HTTP error responses. The render method is used to translate instances of this class into
    fastapi.responses.ORJSONResponse responses.
    """
    status: int
    detail: str

    def render(self) -> fastapi.responses.ORJSONResponse:
        """
        Translates a class instance into a fastapi.responses.ORJSONResponse
        :return: fastapi.responses.ORJSONResponse
        """
        logger.info(f"Returned error response: status: {self.status}, msg: {self.content}")
        return fastapi.responses.ORJSONResponse(
            status_code=self.status,
            content=self.content()
        )

    def content(self):
        return {'detail': self.detail}

    def json_content(self):
        return json.dumps(self.content())


class BadRequest(HttpErrors):
    status = 400


class Unauthorized(HttpErrors):
    status = 401


class Forbidden(HttpErrors):
    status = 403


class NotFound(HttpErrors):
    status = 404


class UnprocessableEntity(pydantic.BaseModel):
    status = 422
    detail: List[dict]

    def render(self) -> fastapi.responses.ORJSONResponse:
        return fastapi.responses.ORJSONResponse(
            status_code=self.status,
            content={'detail': self.detail}
        )

这在 FastAPI 0.85.2 中有效，但在 0.104.1 中我收到一个错误，上面写着

AssertionError: Status code 204 must not have a response body

根据代码中的注释，我尝试将空替换为 ，但这不起作用。returnreturn Response(status_code=HTTP_204_NO_CONTENT.value)

我应该如何正确处理空响应？我假设它取决于注释（）中的模型定义，但在这里找不到任何东西。router.put(...)