Client crashed after looting a chest and getting "centennial" achievement, had to run a different instance to reconnect to the server and item reads as "item.lootr.trophy" with missing textures. giving the item to other players seems to crash their client as well, please do help

crash report here:
crash-2025-02-10_23.59.11-client.txt

Ah, this is something I forget to test. 1.21.4 now has vanilla-based data generation for client item JSONs so it shouldn't be too hard to update -- although it will require converting everything. I'll try to get a quick fix in soon.

This should be fixed in the latest 1.21.4 release.