android – 无法加载exp：//出错了

我使用Expo XDE创建了一个项目.我检查了这个 Can’t load expo app: Something went wrong,但我已经启用了“绘制其他应用程序”.当我扫描这个二维码时,它工作 https://expo.io/@ajaysaini/first-proj但是当我在Android设备上从XDE运行它时它没有. @H_105_2@main.js

import Expo from 'expo';
import React from 'react';
import { StyleSheet,Text,View } from 'react-native';

class App extends React.Component {
  render() {
    return (
      <View style={styles.container}>
        <Text>updating!</Text>
      </View>
    );
  }
}

const styles = StyleSheet.create({
  container: {
    flex: 1,BACkgroundColor: '#fff',alignItems: 'center',justifyContent: 'center',},});

Expo.registerRootComponent(App);

当我在设备上运行它时,它在Android设备上显示以下错误.我尝试多次在XDE中重启,但它没有帮助我.

Dependency graph loaded.
11:19:21 AM
StarTing React Native packager...
11:19:24 AM
ScAnning 528 folders for symlinks in D:\Expo\first-proj\first-proj\node_modules (18ms)
11:19:24 AM
Loading dependency graph.
11:19:24 AM
Running packager on port 19001.
11:19:25 AM
11:19:33 AM
Project opened! You can Now use the "Share" or "Device" buttons to view your project.
11:19:44 AM
opening on Android device
11:19:54 AM
Dependency graph loaded.
11:21:41 AM
opening on Android device
11:23:31 AM
opening on Android device

错误：

There was an unhandled error: Could not load exp://
Stack Trace:

任何人都可以帮我解决问题吗？