这个错误突然出现在我面前，而我解决它的方法是:

Android Studio中的AVD管理器 在虚拟设备的操作下按下箭头 擦除数据 重新启动地铁

试试这个

taskkill /F /IM node.exe

然后

npx react-native run-android

    this works for me on ubuntu
    
    1. if you are having node version 17 first downgrade its version:-
    You can use n for node's version management.
    
    this is very easy to use.
    $ npm install -g n
    
    then you can show your node version:
    $ node -v
    v16.13.2
    
    2. create an assets folder inside root of the project:-
    project\android\app\src\main\assets
    set folder name should be assets

3. now the final step implement the given code inside the project folder:- 

$cd project 
/project$ react-native bundle --platform android --dev false --entry-file index.js --bundle-output android/app/src/main/assets/index.android.bundle --assets-dest android/app/src/main/res

4. after following all these step react-native was successfully running on my pc

(快速回答)

在我的工作空间尝试解决这个问题后，我找到了一个解决方案。

此错误是因为Metro使用NPM和Node版本的某些组合时出现了问题。

你有两个选择:

Alternative 1: Try to update or downgrade npm and node version. Alternative 2: Go to this file: \node_modules\metro-config\src\defaults\blacklist.js and change this code: var sharedBlacklist = [ /node_modules[/\\]react[/\\]dist[/\\].*/, /website\/node_modules\/.*/, /heapCapture\/bundle\.js/, /.*\/__tests__\/.*/ ]; and change to this: var sharedBlacklist = [ /node_modules[\/\\]react[\/\\]dist[\/\\].*/, /website\/node_modules\/.*/, /heapCapture\/bundle\.js/, /.*\/__tests__\/.*/ ]; Please note that if you run an npm install or a yarn install you need to change the code again.

对我有效的解决方案如下:

var sharedBlacklist = [
  /node_modules[\/\\]react[\/\\]dist[\/\\].*/,
  /website\/node_modules\/.*/,
  /heapCapture\/bundle\.js/,
  /.*\/__tests__\/.*/
]; 

这是由于android设备无法连接到地铁服务器。如果上面的不起作用，检查一下你的android设备是否配置了代理。(设置>代理>不代理)。