react-native 搭建

Question

我搭建的react-native 为什么没办法再模拟器上运行，一运行就报红屏

项目的环境已经搭好，react-native start也能正常运行，就是运行react-native run-android时报错，
adb的版本什么的都是对应好的，求大神教导！！！

`

{
  "name": "nativetest",
  "version": "0.0.1",
  "private": true,
  "scripts": {
    "start": "node node_modules/react-native/local-cli/cli.js start",
    "test": "jest"
  },
  "dependencies": {
    "react": "16.4.1",
    "react-native": "0.56.0"
  },
  "devDependencies": {
    "babel-jest": "23.4.2",
    "babel-preset-react-native": "5",
    "jest": "23.4.2",
    "react-test-renderer": "16.4.1"
  },
  "jest": {
    "preset": "react-native"
  }
}

`