There is no way to tell the Nativization to look for additional files. This is also likely not related to nativization in any manner, as the files mentioned by this error are not nativized. It could be a symptom of the other issues or your implementation, as there’s no reason that Oculus should be compiled if you’re using a binary version of the editor, as that will fail in any case.
Even if GameSparks is a tool that many people use, that doesn’t mean that it is built for or meant to be used with blueprint nativization.