How to integrate a unity project as a library of a native Android project?,How to integrate a unity project as an Android library?

Hey all, I am trying to integrate an unity project into an android project but I get the following error on build:

 Could not find :ARPresto:.
 Required by:
     project :unityLibrary
 Search in build.gradle files

Do you have any idea how I can solve that?,Hey everybody, I am trying to integrate a unity project into a parent Android Studio project. I managed to get the library in the Android Project but I can't build/run it. It gives me the following error:

Could not find :ARPresto:. Required by: project :unityLibrary Search in build.gradle files

Do you have any idea how to fix that?