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/tawsif/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 debug.keystore -storepass android -alias androiddebugkey -keypass android -keyalg RSA -keysize 2048 -validity 10000

Link to the issue: https://github.com/facebook/react-native/issues/25629