i join my world and i notice that a bunch of chunks at my base are just gone. most of the chunks are missing but some chunks at my main base reverted back to how they were when i first made the world. i lost almost all of my important loot and parts of my builds are gone. lost my beacon, my mine, my ender chest, my jukebox with almost all the MC discs, my entire enchantment room AND the enchantment books located in it, my treasure room with all my gold and diamond blocks, as well as my shulker with tons of OP items INCLUDING MY ENTIRE DECKED OUT NETHERITE ARMOR SET. I've been working on this world for many months now and have gotten and done so many thing in it so this is incredibly discouraging. i just want my stuff and chunks back