ReactNative Metro Bundler not starting automatically

 Replace the code with this one. The path of the file is -

node_modules\metro-config\src\defaults\blacklist.js

var sharedBlacklist = [

  /node_modules[\/\\]react[\/\\]dist[\/\\].*/,

  /website\/node_modules\/.*/,

  /heapCapture\/bundle\.js/,

  /.*\/__tests__\/.*/

];

Snapshots is given below:

ERROR:'keytool' is not recognized as an internal or external command, operable program or batch file

 Try C:\Program Files\Java\jre1.8.0_111\bin>keytool -genkey -v -keystore D:\debug.keystore -storepass android -alias androiddebugkey -keypass android -keyalg RSA -keysize 2048 -validity 10000 

React Native Task :app:validateSigningDebug FAILED

 The problem is that the build is looking for the debug keystore and cannot find it.

Keystore file /home/sandeep/react native/react-native-redux/android/app/debug.keystore not found for signing config 'debug'.

There's an issue with the same problem in React Native GitHub. According to the page, you can solve it by creating a debug keystore. Quote from the thread:

You can generate the debug keystore by running this command in the android/app/ directory: 

keytool -genkey -v -keystore D:\debug.keystore -storepass android -alias androiddebugkey -keypass android -keyalg RSA -keysize 2048 -validity 10000

Copy the file from D drive and put in below location

/home/sandeep/react native/react-native-redux/android/app/debug.keystore