title: React-native iOS build is failed
body: <p>The react-native iOS build is failed with following error.</p>
  
  <pre><code>GB-MAC-01s-MacBook-Pro:rrtest muruganandham.kuppan$ react-native run-ios
  Found Xcode project rrtest.xcodeproj
  Building using "xcodebuild -project rrtest.xcodeproj -configuration Debug -scheme rrtest -destination id=E7283C81-5F0D-4732-BF8B-19DB3C904DA2 -derivedDataPath build"
  Ignoring unf_ext-0.0.7.5 because its extensions are not built.  Try: gem pristine unf_ext --version 0.0.7.5
  ▸ Running script 'Start Packager'
  ** BUILD FAILED **
  
  
  Installing build/Build/Products/Debug-iphonesimulator/rrtest.app
  An error was encountered processing the command (domain=NSPOSIXErrorDomain, code=22):
  Failed to install the requested application
  The bundle identifier of the application could not be determined.
  Ensure that the application's Info.plist contains a value for CFBundleIdentifier.
  Print: Entry, ":CFBundleIdentifier", Does Not Exist
  </code></pre>
  
  <p><a href="https://i.stack.imgur.com/1Lkj6.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/1Lkj6.png" alt="enter image description here"></a></p>
  
  <p>I have tried few solutions, but no luck.</p>
  
  <p>EDIT: Additional info
  <a href="https://i.stack.imgur.com/OV2xj.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/OV2xj.png" alt="enter image description here"></a></p>
  
  <p>I have changed the react native port to 8088 and modified it in project.  </p>