No release bundle folder after upgrading Android Studio

Question

I recently upgraded my Android Studio to version 2.3 with the corresponding gradle version.

I have two modules inside my projec

Answer 1

Not sure if this is the proper solution but I added this to my gradle file within the android section and the release folder has returned.

publishNonDefault true

Answer 2

On Android studio 3.1+ the build path got changed. So change the path to "build/intermediates/packaged-classes/release/".

task exportJar(type: Copy)
{
    from('build/intermediates/packaged-classes/release/')
    into('build/outputs/')
    include('classes.jar')
    rename ('classes.jar', 'NAME.jar')
}