`Error:Execution failed for task ':app:processDebugManifest'.
Manifest merger failed : Attribute application@icon value=(@mipmap/ic_launcher) from AndroidManifest.xml:7:9-43
is also present at [im.dacer:AndroidCharts:1.0.1] AndroidManifest.xml:13:9-45 value=(@drawable/ic_launcher).
Suggestion: add 'tools:replace="android:icon"' to element at AndroidManifest.xml:5:5-18:19 to override.`
just get your ic_launcher and paste it in your drawables folder,
2.Go to your manifest and change android:icon="@drawable/ic_launcher"
3.Clean your project and rebuild
Got from this link
`Error:Execution failed for task ':app:processDebugManifest'.