title: React Native release APK crash
body: <p>I have an issue with React Native 50.3 and 50.4, </p>
  
  <p>I have used react-native-git-upgrade with my app it worked fine and when i run react-native run-android the app works fine</p>
  
  <p>The app is fully working on React Native Version 47.2 after i upgrade the app using upgrade app when i run the release APK the app crash on open</p>
  
  <p>I have tried for days now to resolve this without success. Im not really sure what is causing this issue as when i run the debug version the app works fine no issues i can find and when i go back to my build on 47.2 it works fine. </p>
  
  <p>As soon as i open the installed signed APK the app crashes.</p>
  
  <p>One thing i have noticed is the size of the APK when i build on 47.2 where it is working my APK is 20mb larger.</p>
  
  <p>Im not getting any error with the build or signing</p>
  
  <p>Can anyone help me to debug this issue or find a solution?</p>
  
  <pre><code>{
    "name": "APP",
    "version": "0.0.1",
    "private": true,
    "scripts": {
      "start": "node node_modules/react-native/local-cli/cli.js start",
      "test": "jest"
    },
    "dependencies": {
      "mobx": "^3.1.8",
      "mobx-react": "^4.1.5",
      "native-base": "^2.3.1",
      "react": "^16.0.0",
      "react-native": "^0.50.4",
      "react-native-collapsible": "^0.8.0",
      "react-native-drawer": "^2.3.0",
      "react-native-fcm": "^8.0.0",
      "react-native-maps": "^0.15.3",
      "react-native-svg": "^5.1.7",
      "react-native-transformable-image": "0.0.18",
      "react-native-vector-icons": "^4.3.0",
      "react-navigation": "^1.0.0-beta.11"
    },
    "devDependencies": {
      "babel-cli": "^6.24.0",
      "babel-jest": "19.0.0",
      "babel-plugin-transform-decorators-legacy": "^1.3.4",
      "babel-preset-flow": "^6.23.0",
      "babel-preset-react-native": "1.9.1",
      "babel-preset-react-native-stage-0": "^1.0.1",
      "jest": "19.0.2",
      "react-test-renderer": "15.4.2"
    },
    "jest": {
      "preset": "react-native"
    }
  }
  </code></pre>