Check this out https://github.com/ekasetiawans/flutter_background_service/issues/285#issuecomment-1683243726

you may need to:

• Install flutter_local_notifications

• Add isCoreLibraryDesugaringEnabled = true to your compileOptions

• Add coreLibraryDesugaring("com.android.tools:desugar_jdk_libs:2.1.5") to your dependencies