Developing for Android - Gradle Error / AndroidManifest - Resource 'drawable/app_banner' not found

I've tried for the last three days searching and trying different solutions to this issue and about to headbutt my laptop. I took out the lines in the manifest, in various ways....taking out the whole line, taking out the @drawable/app_icon lines, replacing the @drawable with @mipmap, and yet still nothing or more related errors to the line: Tried: http://shobhitsamaria.com/troubleshooting-unity-build-android-platform/ https://answers.unity.com/questions/1542418/gradle-error-ressource-not-found.html And a bunch more that I do not care to re-visit, but if you want I can list them here......later. This started happening when I started to delete files that I no longer needed - is that what causes this mess? It's been D L L hell. How can I fix this other than what I've listed so far? I re-installed Android SDK's, upgraded Unity (even though I'm in the middle of a project and usually that's frowned upon and avoided like the plague) - I was grasping at straws at this point. My project is using two plugins, but had a third one which I removed (Would that be the cause?) Ugh...