java.lang.NullPointerException (no error message) APK building

Question

// Top-level build file where you can add configuration options common to all sub-projects/modules.

buildscript {
    repositories {
        maven {
            url \"h         


        

Answer 1

I had the same issue after adding:

compileOptions {
    sourceCompatibility JavaVersion.VERSION_1_8
    targetCompatibility JavaVersion.VERSION_1_8
}

It was because my default java version was 10:

$ java -version
java version "10.0.1" 2018-04-17

After changing to 1.8 (with sudo update-alternatives --config java) issue was fixed.