Fixed Error

The option setting 'android.defaults.buildfeatures.buildconfig=true' is deprecated.
The current default is 'false'.
It will be removed in version 9.0 of the Android Gradle plugin.
You can resolve this warning in Android Studio via `Refactor` > `Migrate BuildConfig to Gradle Build Files`

Pilih menu Refactor -> Migrate BuildConfig to Gradle Build Files

Pilih Do Refactor, tunggu hingga selesai