the hole horizon went black. I tried to press F3+A but it didnt fix it. Then I exitd the game and when I came back my Donkey dissapeard

Put the summary of the bug you're having here

What I expected to happen was...:

It shoudnt' go blanck

What actually happened was...:
I glithced and my donkey dissapeardd

Steps to Reproduce:
1. Walking far form home
2. ...The blocks in front of me where white, i couldnt see anything
3. ...I exitd the game

4 My donkey dissapeaed