title: Could not find the following native modules after upgrading the react-native to latest version 0.61.4
body: <p>After upgrading the react-native version I am getting the following. And failed to run the build in simulator</p>
  
  <p>After this, I have run react-native run-ios it shows all my packages are manually linked and you need to unlink all packages.</p>
  
  <p>Also, can anyone clarify the react-native-config.js file is mandatory for this after updating to the latest react-native.</p>
  
  <p>Always I open the app.Xcodeproj but the below shows I need to open app.xcworkspace. Can anyone clarify this?</p>
  
  <pre><code>warn The following packages use deprecated "rnpm" config that will stop working from next release:
    - react-native-fetch-blob: https://github.com/wkh237/react-native-fetch-blob#readme
    - react-native-orientation: https://github.com/yamill/react-native-orientation#readme
    - rn-fetch-blob: https://github.com/joltup/rn-fetch-blob#readme
  Please notify their maintainers about it. You can find more details at https://github.com/react-native-community/cli/blob/master/docs/configuration.md#migration-guide.
  error Could not find the following native modules: BugsnagReactNative, react-native-camera, react-native-cookies, react-native-fast-image, react-native-fetch-blob, RNFS, RNGestureHandler, RNImageCropPicker, react-native-image-picker, RNImageRotate, BVLinearGradient, react-native-orientation, RNShare, RNSVG, RNVectorIcons, RNViewShot, react-native-webview, rn-fetch-blob. Did you forget to run "pod install" ?
  info Found Xcode workspace "Fashion.xcworkspace"
  </code></pre>