Reproduction Steps

Load a world while having Sodiumforge, Starlight and MCMT installed at the same time. Crashes will randomly happen in seconds to minutes when generating chunks.

Crash Report File

https://gist.github.com/ShroudedGuise/c6550361a7d271cefc32f7aef2e0b267

Mods list

Sodium-forge
MCMT
Starlight-forge

Additional Information

The crash only happens when all three of these mods are installed, any combination of only two is fine and doesn't crash.
Current Sodium-mixins.properties is as follows to work with MCMT
mixin.ai=false
mixin.world=false
mixin.gen=false
# mixin.chunk=false
mixin.world.chunk_access=false
mixin.world.tick_scheduler=false
mixin.alloc.chunk_ticking=false
mixin.world.block_entity_ticking=false
mixin.alloc.chunk_random=false

MCMT scrambles a bunch of the game's insides, combined with starlight which entirely replaces the lighting engine, and then there's Sodium's inbuilt lithium and other internal functions, and you got a nasty brew for a plethora of issues. this kind of thing is inherently inevitable due to the nature of both :/
I'd suggest you report this to MCMT/Starlight too (or instead), and see what they think.