问使用Axios，aynsc/等待和打字记录，我不知道这种情况

EN

Argument of type 'Promise<unknown>' is not assignable to parameter of type 'SetStateAction<WorkflowForReactFlowProps[] | null>'.

export const requestWorkflows = async () => {
  try {
    const response: AxiosResponse = await axios.get(`${baseUrl}/workflows`);
    const workflows = formatWorkflows(response.data.workflows);
    return workflows;
  } catch (error) {
    return error;
  }
};

const [workflows, setWorkflows] =
    useState<Array<WorkflowForReactFlowProps> | null>(null);

  useEffect(() => setWorkflows(requestWorkflows()), []);