Gradle sync error "Compilation is not supported for the following modules: android."

[topherbuckley]

Getting this error:

Compilation is not supported for the following modules: android.

Unfortunately, you can't have non-Gradle Java modules and Android-Gradle modules in one project. If you didn't add those intentionally, consider removing them by selecting the option below

[topherbuckley]

Running ./gradlew and successfully building then returning to Android Studio will resolve this. Not sure exactly why, but leaving this open to find a more permanent solution later.

[topherbuckley]

Or more quickly than building everything, just ./gradlew assembleDebug should also work.