我想Map一个对象内部的数组，看看该数组是否包含teacherId，并将其存储在一个状态中，然后Map它，以便<Section />组件可以呈现它。

const teacherId = details.id;

const [availableSection, setAvailableSection] = useState([])

useEffect(() => {
  const availSection = sections.map((section) => (
    section.teachers.includes(teacherId) ? section : null
  ))
        
  setAvailableSection(availSection);

}, [sections])

在第一次转换到"/dashboard"页面时，它返回了一个错误Uncaught TypeError: Cannot read properties of undefined (reading 'includes')，但是如果我再次刷新页面，它会显示得很好。
转到"/dashboard"页面后，我想立即显示<Section />组件。
下面是我代码：
父母：

function Dashboard() {
  const dispatch = useDispatch(getSections())

  useEffect(() => {
    dispatch(getSections());
  }, [dispatch])

  const location = useLocation()

  return (
    <>
      <h1>Hello {location.state.teachersDetail.userName}</h1>
      <h1>This is where the chart and cards are located</h1>
      <Sections details={location.state.teachersDetail} />
    </>
  )
}

export default Dashboard;

截面组件：

function Sections({ details }) {
  const sections = useSelector((state) => state.sections)

  console.log(sections);

  const teacherId = details.id;

  const [availableSection, setAvailableSection] = useState([])

  useEffect(() => {
    const availSection = sections.map((section) => (
      section.teachers.includes(teacherId) ? section : null
    ))
        
    setAvailableSection(availSection);
  }, [sections])

  return (
    !sections.length
      ? <CircularProgress />
      : (
        <Grid
          container
          direction="column"
          justifyContent="flex-start"
          alignItems="stretch"
          style={{margin:'0 auto'}}
        >
          {availableSection.map((section) => (
            section !== null
              ? (
                <Grid key={section._id} item xs={12} sm={6}>
                  <Section section={section}/>
                </Grid>
              )
              : null
          ))}
        </Grid>
      ) 
  )
}

export default Sections

下面是section对象：
章节名称："ICT-5B"，教师：（3）["1"、"2"、"3"]，标识符："63英尺493英寸77英尺87英寸1723英寸553英寸"