People who have been using the plugins like Firebase and/or other Google services may have all of a sudden had their apps stop building with an error like this. + adding aar plugin dependency: .[some path].\widgets-release.aar .[somepath].\app\src\main\AndroidManifest.xml:22:18-91 Error: Attribute application@appComponentFactory value=(android.support.v4.app.CoreComponentFactory) from [com.android.support:support-compat:28.0.0] AndroidManifest.xml:22:18-91 is also present at [androidx.core:core:1.0.0] AndroidManifest.xml:22:18-86 value=(androidx.core.app.CoreComponentFactory). Suggestion: add 'tools:replace="android:appComponentFactory"' to… Continue reading NativeScript 5.4 Build Failures