Forge version: forge-1.12.2-14.23.3.2655-universal.jar (most recent recommended, running the server)
Twilight Forest version: twilightforest-1.12.2-3.6.345-universal.jar
Link to crash log: Gist starting at line 767.

Steps to reproduce:

1. Told chunk pregen to generate a new Twilight region file bordering already-explored locations. Just happened to hit the coordinates for the Final Tower.

I did this specifically because worldgen causes big FPS drops with my mod list and pregenerating the world is one of the ways to avoid that, so I like to explore already-generated maps.

What happened:

• Upon starting final tower generation, the server log gets spammed with the following:
  [11:28:57] [Server thread/WARN] [twilightforest]: Final Castle tower has null for glyph color, this is a bug.

Possibly related to #63 and/or #399? I'm absolutely not sure about that.

I don't mind deleting the region file and restarting since nobody is about to explore that far out yet in Twilight, we're just starting the progression.

From what I understand, this no longer happens in 1.16. The error itself is harmless and nothing happens as a result of it.