react-hook-formでuseMutationを使いたい

題名の通りreact-hook-formでuseMutationを使いたいです.
下記のコードでonSubmitで型エラーは発生してしまいます.
解決策をご存知の方はよろしくお願いします


const ADD_TODO = gql`
  mutation MyMutation {
    insert_news(objects: { title: $title }) {
      affected_rows
    }
  }
`;
const Home = () => {

 const [addTodo] = useMutation(ADD_TODO);
return (
  <form onSubmit={handleSubmit(onSubmit)} style={{ width: "200px" }}>  
          {console.log(errors)}
          <TextFeild
            label="title"
            name="title"
            err={!!errors.title}
            hoge={register({ required: true })}
          />
          <TextFeild
            label="title1"
            name="title1"
            err={!!errors.title1}
            hoge={register({ required: true })}
          />
          <Button type="submit" color="primary" variant="contained">
            submit
          </Button>
        </form>
  )
}

Argument of type '(data: { title: string; }) => Promise<FetchResult<any, Record<string, any>, Record<string, any>>>' is not assignable to parameter of type 'SubmitHandler<IFormInputs>'.
  Type 'Promise<FetchResult<any, Record<string, any>, Record<string, any>>>' is not assignable to type 'void | Promise<void>'.
    Type 'Promise<FetchResult<any, Record<string, any>, Record<string, any>>>' is not assignable to type 'Promise<void>'.
      Type 'FetchResult<any, Record<string, any>, Record<string, any>>' is not assignable to type 'void'.