Best for: Reddit, StackOverflow answers, or community support.
Then locate d8.jar at: android_sdk/build-tools/30.0.3/lib/d8.jar d8.jar download
https://dl.google.com/android/repository/build-tools_r<VERSION>-<OS>.zip Best for: Reddit
You can download it from Google’s official repo: https://maven.google.com/web/index.html?q=d8#com.android.tools:r8 d8.jar download