build failed: exit code 127

Question

created my project with my app

This is the project.json file. That I have created

{
  "name": "detox",
  "version": "0.0.1",
  "private": true,
  "scripts": {
    "ios": "react-native run-ios",
    "start": "node node_modules/react-native/local-cli/cli.js start",
    "test": "jest",
    "test:e2e":"navicotrackapp test",
    "test:e2e:build":"navicotrackapp build"

  },
  "dependencies": {
    "react": "16.6.1",
    "react-native": "0.57.7"
  },
  "devDependencies": {
    "babel-jest": "23.6.0",
    "jest": "23.6.0",
    "metro-react-native-babel-preset": "0.49.2",
    "react-test-renderer": "16.6.1"
  },
  "jest": {
    "preset": "react-native"
  },
  "detox": {
    "configurations": {
      "ios.sim.debug": {
        "binaryPath": "ios/build/Build/Products/Debug-iphonesimulator/navicotrackapp.app",
        "build": "xcodebuild -project ios/navicotrackapp.xcodeproj -scheme navicotrackapp -configuration Debug -sdk iphonesimulator -derivedDataPath ios/build",
        "type": "ios.simulator",
        "name": "iPhone XR"
      }
    }
  }
}

However. When I ran the test this was the out come:

Questions:

1. What did I do wrong
2. How do I fix it?

Answer 1

For those coming with yarn 127 error code problem

Take a look on https://github.com/reactstrap/reactstrap/issues/711 Most probably you just need to run in console yarn :)

Answer 2

Just use https://app.netlify.com/drop to deploy manually on Netlify

first run this command

npm run build 
OR 
yarn run build

Then drag and drop the build folder on the website above.