收到物品后，出现以下错误。 目前我只是在学习，并查看了有关此主题的其他答案，但没有任何结果。

export default function App() {
  const [items, setItems] = React.useState();

  React.useEffect(() => {
    axios
      .get('https://62fa26ddffd7197707e66da8.mockapi.io/items')
      .then(({ data }) => {
        setItems(data);
      })
      .catch((err) => {
        console.log(err);
        Alert.alert('Ошибка', 'Ошибка при получении статей');
      });
  }, []);

  return (
    <View>
      <StatusBar style="inverted" />
      {items.map((obj) => (
        <Post title={obj.title} price={obj.price} imageUrl={obj.imageUrl} />
      ))}
    </View>
  );
}

错误：

ERROR  TypeError: undefined is not an object (evaluating 'items.map')

This error is located at:
    in App (created by ExpoRoot)
    in ExpoRoot
    in RCTView (created by View)
    in View (created by AppContainer)
    in RCTView (created by View)
    in View (created by AppContainer)
    in AppContainer
    in main(RootComponent)