Describe the bug
I attempted to generate a vanilla world with the cubic chunks world generation option set to no and it crashed during generation.

To Reproduce
Steps to reproduce the behavior:

1. Use both Cubic Chunks and Entity Culling.
2. Attempt to generate a world with the generation option on the CC button set to "no"
3. Crash

Expected behavior
I wanted to test if a separate issue would occur on a vanilla world when Entity Culling and CC were installed, instead I found another bug to report.

Versions
Entity Culling: EntityCulling-1.12.2-2.0.6
Forge: 1.12.2-forge-14.23.5.2854
Minecraft: 1.12.2

Other
Crash report (upload as a file):
crash-2021-01-23_13.20.14-client.txt
Latest log (upload as a file):
logs.zip
Singleplayer/Multiplayer: Singleplayer
Other mods (that are necessary to produce the bug): Cubic Chunks
Other mods (that are also installed): Cubic Chunks

Fixed in v2.0.7