Steps to Reproduce the Crash

Using my modpack on 1.16.5, any world you create, will crash.

Mod Pack URL (Optional)

https://www.mediafire.com/file/27ih9ncp1z4s4a9/mods.7z/file

Mod Pack Version (Optional)

No response

Extra Notes (Optional)

No response

Crash Report

https://gist.github.com/Luppyn/17e13fe0453c01363549349664ec47f2

Creating a new world works perfectly for me - using forge 36.2.35

Thanks for the report!
This looks like an issue with Tinker's Construct, please try updating it and if you still have the same crash log, please report it to the mod author.

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