React native require('./images/tabbar_1.png') 报错，请问是什么原因

#1

react native require(’./images/tabbar_1.png’) 报错，请问是什么原因
图片路径都是对的。

import React, { Component } from 'react';
import {
  AppRegistry,
  StyleSheet,
  Text,
  View,
  Image,
} from 'react-native';
import TabNavigator from 'react-native-tab-navigator';

const TAB_NORMAL_1=require('./images/tabbar_1.png');

export default class shuwo extends Component｛｝

#2

重新npm start看看, 不行就watchman watch-del-all && npm start