Context

Steam and rail: 1.6.11 alpha
Minecraft: 1.20.1
Java: 23.0.1
Forge: 47.4.0
Game crash when Semaphore is placed on Train signal.
I placed a semaphore on a train signal and game crash, and now I can't access my world.
I obviously make buck up and can revert that crash, but I will appreciate quick fix of it.

Crash Report

https://mclo.gs/ULDkjfg

Copycats Plus is causing this crash, not SnR. Indeed, it might not even be Copycats, but Sinytra connector, or some other combination of mods.