My world is broken.

I updated Minecraft today, and I loaded my world. Then, my world is broken. I made a[video]https://www.reddit.com/r/Minecraft/comments/pt54r4/this_happened_when_i_loaded_my_world_i_dont_know/]

I think the chunks got dropped down.  I don't have a Realm now. Will this world be able to come back?