Install android-sdk-platform-23 by entering the following commands in the terminal:
sudo apt update sudo apt install android-sdk-platform-23
Description:
Android SDK Platform for API Level 23 (6.0 Marshmallow)
This package provides the Android SDK Platform for API Level 23 (6.0 Marshmallow). . An Android SDK Platform of a specific API Level is required to build any Android applications that target this API Level.
Homepage: https://android.googlesource.com
Version: 6.0.1+r72-4
Section: universe/devel