路由的组件必须是React组件

路由“Feed”的组件必须是React组件。

我在这里检查了大多数其他类似的问题,但大多数问题都是由于基本语法造成的(可能我也检查过,但我对此视而不见!)。我已经删除了与此问题无关的代码块(navigationOptions和其他屏幕),并且仍然可以通过以下方式重现错误:

import { createStackNavigator, createAppContainer, createBottomTabNavigator } from 'react-navigation';
import { FeedScreen } from '../screens/FeedScreen';

const FeedStack = createStackNavigator({
  Feed: FeedScreen,
});

const DashboardTabNavigator = createBottomTabNavigator(
  {
    FeedStack
  }
);

const DashboardStackNavigator = createStackNavigator(
  {
    DashboardTabNavigator: DashboardTabNavigator
  }
);

const AppContainer = createAppContainer(DashboardStackNavigator);

export default AppContainer;

./屏幕/DashboardScreen.js

import React, { Component } from 'react';
import { StyleSheet } from 'react-native';
import AppContainer from '../navigators/AppNavigator';

class DashboardScreen extends Component {
  render() {
    return (
      <AppContainer />
    );
  }
}

export default DashboardScreen;

./屏幕/FeedScreen.js

import React from 'react';
import { View } from 'react-native';

export default class FeedScreen extends React.Component {
  render() {
    return (
    <View>
    </View>);
  }
}