Json “获取未定义”不是一个对象

我正在寻找的反应本地样本项目。首先，我得到了erro，它无法解决路由器流量。然后我添加了通量依赖项，并运行npm start。之后，我在package.json中得到了“Undefined不是对象”。我怎样才能解决它。你能帮帮我吗

{
 "name": "FirsTrial",
 "version": "0.0.1",
 "private": true,
 "scripts": {
 "start": "node node_modules/react-native/local-cli/cli.js start",
 "test": "jest"
},
 "dependencies": {
 "react": "16.3.1",
 "react-native": "0.55.3",
 "react-native-router-flux": "3.38.0"
},
"devDependencies": {
"babel-jest": "22.4.3",
"babel-preset-react-native": "^2.1.0",
"jest": "22.4.3",
"react-test-renderer": "16.3.1"
  },
 "jest": {
 "preset": "react-native"
  }
}

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“第一审”下面划线

在添加package.json后是否运行了npm安装？是的。但同样的问题也发生了。