Crashes when using bob's mods. Bob's Logistics I believe.

LinkedBelts 0.1.5
bobinserters 1.3.2
boblibrary 2.0.0
bobenemies 2.0.0
bobinserters-tweak 2.0.0
bobores 2.0.0
bobplates 2.0.0
bobtech 2.0.0
bobassembly 2.0.0
bobclasses 2.0.0
bobelectronics 2.0.0
boblogistics 2.0.0
bobmining 2.0.0
bobpower 2.0.0
bobrevamp 2.0.0
bobwarfare 2.0.0
bobmodules 2.0.0
bobvehicleequipment 2.0.0

22.272 Error ModManager.cpp:1758: Error in assignID: entity with name 'linked-bob-turbo-underground-belt' does not exist.

Source: linked-express-underground-belt (linked-belt).

Are those all the mods that you have enabled? Are you playing with Space Age enabled?

Yes and Yes. I do have quite a few other mods enabled but all of the logs and VSCode Lua debugging variable inspection shows this is just linkedbelts/bob interaction as far as I can tell. If you have any issues fixing it an easy option might just be a config setting to add items/entities to skip.