Please see the error:
[ERROR] A fatal error occurred and the program has to terminate!
Description: Path in resource manifest cannot be made relative to: “test”. Path: “scenePrefab.asset”
In function: static void bs::ResourceManifest::save(const SPtr<bs::ResourceManifest> &, const bs::Path &, const bs::Path &)
In file: /Users/travis/build/GameFoundry/bsf/Source/Foundation/bsfCore/Resources/BsResourceManifest.cpp:122