I have created an app. When I execute it in debug mode it works fine. But when I want to generate the signed APK I am getting the following errors

Android resource linking failed F:\Android Studio Projects\NMT\app\build\intermediates\packaged_manifests\release\AndroidManifest.xml:28: error: resource mipmap/ic_launcher_nmt (aka com.example.thumbsol.accuratesurvey:mipmap/ic_launcher_nmt) not found. F:\Android Studio Projects\NMT\app\build\intermediates\packaged_manifests\release\AndroidManifest.xml:28: error: resource mipmap/ic_launcher_round_new_nmt_round (aka com.example.thumbsol.accuratesurvey:mipmap/ic_launcher_round_new_nmt_round) not found. error: failed processing manifest.

Here is the link to my