Happy Wild Update Day! The Minecraft Java & Bedrock Edition for PC Bundle is also available. If you ever purchased either game, you now own both! No need to do anything – both games will be on your Microsoft account. Check out our FAQ here: help.minecraft.net/hc/en-us/…

That's not fun at all! Are you able to provide screenshots of the error you're receiving when you attempt to save? ^AC

Happened to me to, it did that when I saved and quit and then it did the same thing when I tried downloading the free wood punching emote from the store.