android-Expo推送通知-错误：无法获取设备的GCM令牌

概述我尝试在mt应用程序上实现ExpoNotification,连线非常好,在我的上一个博览会应用中,它运作良好,但现在却不行,可能是因为版本更新了当我尝试博览会文档中的代码时,这是显示Error:Couldn'tgetGCMtokenfordevice这是pacage.json：我的package.json：{"name":"blabla",

我尝试在mt应用程序上实现Expo Notification,
连线非常好,在我的上一个博览会应用中,它运作良好,但现在却不行,
可能是因为版本更新了
当我尝试博览会文档中的代码时,这是显示

Error: Couldn't get GCM token for device

这是pacage.Json：

我的package.Json：

{  "name": "blabla",  "version": "0.1.0",  "private": true,  "devDependencIEs": {    "babel-plugin-transform-decorators-legacy": "^1.3.5",    "jest-expo": "~27.0.0",    "react-native-scripts": "1.14.0",    "react-test-renderer": "16.3.1"  },  "main": "./node_modules/react-native-scripts/build/bin/crna-entry.Js",  "scripts": {    "start": "react-native-scripts start",    "eject": "react-native-scripts eject",    "androID": "react-native-scripts androID",    "ios": "react-native-scripts ios",    "test": "jest"  },  "jest": {    "preset": "jest-expo"  },  "dependencIEs": {    "es6-symbol": "^3.1.1",    "expo": "^29.0.0",    "firebase": "^5.4.1",    "mobx": "^4.3.1",    "mobx-react": "^5.1.0",    "react": "16.3.1",    "react-native": "~0.55.2",    "react-native-animatable": "^1.3.0",    "react-native-ionicons": "^0.2.2",    "react-native-progress": "^3.5.0",    "react-native-simple-toast": "0.0.8",    "react-navigation": "^2.11.0"  }}

解决方法:

只需使用expo start代替react-natives-scripts start来修复它即可.
如果您遇到expo-cli错误,请运行npm install expo-cli –global.

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