The crash :
java.lang.IllegalStateException: Unregistered memory fetched: geodes:remembers_fools_gold

analysis :

crash-2025-05-10_22.45.40-server.txt

the PiglinAi is trying to access a custom memory key (remembers_fools_gold) that was not registered properly by the mod More Geodes Reforged.

This memory key is likely used for AI behavior where Piglins interact with Fool's Gold (a feature from More Geodes). However, when the Piglin Alchemist from Piglin Proliferation triggers this AI behavior, the key is missing—causing the crash.

Piglin Proliferation extend piglin behavior by adding new entities or modifying brain logic. More Geodes Reforged also modifies Piglins via mixins for their custom gold type (Fool's Gold), but it assumes its memory key was registered globally