Versions

Mod version:

HACLib version: HeatAndClimateLib_1.12.2-3.2.0
HAC version: HeatAndClimateMod_1.12.2-3.2.0
Waila(Hwyla) version: Hwyla-1.8.26-B41_1.12.2

Forge version:

forge-1.12.2-14.23.5.2847

Singleplayer or Multiplayer:

Singleplayer

Installed mods:

Description of the problem

How to reproduce:

Simply point at an entity using mouse, and you can see an <ERROR> in Waila's information box.

Pictures:

Four pictures. Link: https://imgur.com/gallery/DE8KfEz
A link to WailaErrorOutput.txt: https://paste.ubuntu.com/p/5QG7cY8nmS/

Thanks for the report!
It fixed at 3dc9c46.

The new version is here now. Please try it.

Bug is fixed!
Thanks to dear crow-chan :)