[Forge 1.20.1] Worldgen Crash "blockstateIn" is null

[BOLTMAGIC]

NeoForge Version

1.20.1

Twilight Forest Version

4.3.2508

Client Log

No response

Crash Report (if applicable)

https://mclo.gs/RTA3Rp5

Steps to Reproduce

cant really reproduce. just got the crash report.

What You Expected

to worldgen normaly without crash

What Happened Instead

a crash

Additional Details

#2335
looks like its the same crash just for another Minecraft version

Please Read and Confirm The Following

• I have confirmed this bug can be replicated without the use of Optifine.
• I have confirmed the details provided in this report are concise as possible and does not contained vague information (ie. Versions are properly recorded, answers to questions are clear).
• I have confirmed this issue is unique and has not been reported already.