That's the end of the latest release. I don't know about a black screen per se, but there's no more content after that, so I wouldn't worry too much about it. You might want to reload to your last save before that and play again up until near the end of that scene and then save the game before the scene finishes. With the next release, it's probable you can then load that save and continue without a problem. If you still have an error after that next release, though, you might visit Milfarion's Patreon and let them know there's an issue.