Before I found this one I made my own bug report (MCPE-92519). It shows proof (clip) of the bug popping up and that I have more than enough space on my system and on my Minecraft worlds storage whatever it's called.
Edit.
It also only seems to happen with this certain world. I've created more worlds to see if I'm even able to do so and to try and reproduce the bug but nothing happens to them.
I've been having this same issue on PS4 ever since I updated to the Nether update.
The error is still showing up. My PS4 says I've already installed the latest version which shows as 2.12