Legacy Advancements Debug

This modification represents an unofficial adaptation of the Advancements Debug mod for legacy Legacy Fabric versions 1.12-1.13.2.

This small but effective add-on optimizes the achievements system in Minecraft. It rewrites one key function of the achievements logic, which significantly speeds up their verification and reduces recursion usage. Thanks to this solution, StackOverflowError errors that often occur when working with achievements are prevented.

If you see a mention of net.minecraft.class_3347.method_14931 in crash logs, this modification will likely solve your problem.

The mod can be installed only on the server side if you're experiencing issues on a server. However, it will also be useful for the client part when playing in single-player worlds.