I have been trying to link the local copy of Android Beacon Library on my computer with my project on Android Studio and I have tried several methods described in this thread How do I add a library project to the Android Studio? No matter what method I use, I keep getting the error stated in the title. Some threads on Stack Overflow suggest that this is due to submodules within the library and that it could be fixed with "git submodule update --init" but that didn't do anything for me.
As I've said, I tried different methods for adding the library but just for reference, the latest method I did was to add the library to the app/libs/ folder and make the following changes in the code:
settings.gradle: include ':app',':libs:AndroidBeaconLibrary'
build.gradle: added compile project(":libs:AndroidBeaconLibrary") to dependancies.