未找到 Android 项目.也许先运行 reactnative android

我在React原生项目中遇到了一个问题，该项目之前运行良好，但突然停止运行.每当我使用命令时:

react-native run-android

我得了error分:

找不到Android项目.也许先运行本地android？

我喜欢 run :

react-native android

但它说:

Unrecognized command 'android' Run react-native --help to see list of all available commands

try 之后:

D:\ProjectRoot\ReactNativeProjects\AwesomeProject>react-native eject

返回的错误是:

扫描文件夹中的符号链接

这是应用程序.json文件:

{
  "expo": {
    "name": "AwesomeProject",
    "description": "A very interesting project.",
    "slug": "AwesomeProject",
    "privacy": "public",
    "sdkVersion": "30.0.0",
    "platforms": ["ios", "android"],
    "ios": {
      "supportsTablet": true
    },
    "android": {
      "package": "com.project.first"
    },
    "version": "1.0.0",
    "orientation": "portrait",
    "icon": "./assets/images/icon.png",
    "splash": {
      "image": "./assets/images/splash.png",
      "resizeMode": "contain",
      "backgroundColor": "#ffffff"
    },
    "updates": {
      "fallbackToCacheTimeout": 0
    },
    "assetBundlePatterns": [
      "**/*"
    ]
  }
}