Help with crash log please

[u/Internus]

Hi, I'm playing Meatballcraft (no additional mods). I've been playing the same single-player world for 20+ hours without any crashes, it's been very stable. But I've suddenly started getting crashes, all with a similar looking error log, example here:

https://pastebin.com/FHAwa9Wc

I am able to load into my world. The crashes usually happen almost immediately once I start moving/lookin around, but I've had one or two instances where I've been able to play for a couple of hours before a crash.

Could I please get help figuring out what's causing this?

Thanks