Server crashed while I was AFK - Missing Palette Entry Crash

[s-elmer]

Version

Lithium 0.21.1+mc1.21.11

Reproduction Steps

Not sure how this would be reproduced, I was AFK (only person online) in a 2x1 dirt hole next to my cows and came back and the server had crashed

Crash Report File

crash-2025-12-22_17.02.51-server.txt

[2No2Name]

This seems to be a threading-related issue, as the crash claims that index 15 is not present, while the debug output shows it is Block{minecraft:grass_block}[snowy=false]

[2No2Name]

Only other relevant mod is ferritecore

[NotDarkn]

I'm having this issue as well. I've crashed at least 5 times now and it's starting to get kind of annoying. I too also have FerriteCore.

crash log - 1-3-2025.txt