Massive Holes (GUI) in world

Good Morning,

I was playing in my Minecraft world and have had some major issues with massive wholes being created in the middle of my world that expand the entirety of the world.  They have erased much of what I had been building.  I have tried to reload the UI multiple times as well as export the world and load on an entirely different device to no avail.  I attempted to locate the issues on the FAQs pages but was un successful in locating a remedy.

Any help would be greatly appreciated.

Thank you in advance for you time.

Attached is a copy of the world as well as a screenshot of what I am viewing.

Very Respectfully,

Ethan