This happened to me also. I assume there is no fix for this?
Big black hole going through the world. I have logged out/in. I have traveled to the nether and back. When I jump into the hole, I will fall through the world and die.
Since my house is partly in the hole, I have made my water elevator flow into the hole. I was able to travel down and into my mineshaft that is also affected.
Playing bedrock edition, windows 10. V1.14.1.
I have also several deleted chunks in my game. It happened around a month ago. Reload the game didn't work and I sort of hoped it will fix itself during an update, but it didn't.
I'm playing on Windows 10 without mods. Don't remember the exact version, but I'm not playing beta or something like that.
I have attached a picture showing the error and a picture from my map showing the deleted chunks close to me. There is more outside the map. I'm playing on survival and don't know why it happened.