title says it all, basically, trying to run from source from github, yarn says "ERROR: There are no scenarios; must have at least one."

also, I am a fairly seasoned web developer w/ experience with RoR and a few other things, but this codebase is somewhat confusing to me, is there any general documentation on the technologies being utilized? I was able to get the desktop client working a few months ago, but it seems to have changed, before I ran 'nw .' I believe, or 'wm'.. anyways it was different than the yarn procedure in place now for certain, I tried to find documentation on the old wm thing and couldent find anything at all, is this still the case or not? Please and thanks!