Version Mismatch?

My wife and I played NMS for 5 hours today in coop, myself on Geforce NOW and herself on PS5. We played until suddenly she was booted from the game. Neither of us quit the actual game, but now we are getting Version Mismatch.

The games were compatible until they just weren't. My wife is super bummed out now as she was enjoying building a house with me. Is there any actual fix for this?