Forge Version: 1.12.2 - 14.23.5.2838
HaC Lib version: HeatAndClimateLib_1.12.2-3.1.0
HaCMod version: HeatAndClimateMod_1.12.2-3.1.0

Here are two crash-report:

1. https://paste.ubuntu.com/p/QXBykKfCgD/
2. https://paste.ubuntu.com/p/jBdw9tnXKk/
   Server is using Catserver, a 1.12.2 Forge+Bukkit server, just like Cauldron server.
   You may find some useful information here: https://github.com/CatServer/CatServer

I will provide further information if you need.
Thanks a ton in advance!

It fixed at 6d7518d.
Thank you!