Execution failed for task ':app:processDebugResources'

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':app:processDebugResources'.
> A failure occurred while executing com.android.build.gradle.internal.res.LinkApplicationAndroidResourcesTask$TaskAction
   > Android resource linking failed
     G:\flutter-unity-view-widget-master\example\build\app\intermediates\packaged_manifests\debug\AndroidManifest.xml:75: error: resource style/UnityThemeSelector (aka com.xraph.plugin.flutter_unity_widget_example:style/UnityThemeSelector) not found.      
     error: failed processing manifest.

* Try:
> Run with --stacktrace option to get the stack trace.
> Run with --info or --debug option to get more log output.
> Run with --scan to get full insights.

* Get more help at https://help.gradle.org

Besides that you did not ask any question anyway, the error is not a Gradle problem. Something is wrong in your files, specifically in your android manifest. There is some resource reference that is not found or something like that. You should probably ask in some Android community if you cannot figure it out yourself.