eMigrowsLy1

Have you deleted the Treasure2 mod? If not, delete it and try again.

the problem is most likely in the settings or incompatibility of Prism with Forge 1.21.4

as far as I understand, loading of data and resources is processed by different systems, each with its own priority

Commands on the client do not work on the server.!!!

In multiplayer, BlockEvent.BreakEvent is called only on the server. The client does not receive these events.

Use NBT data to store the ID array. Initialize when the item spawns. Intercept the ItemCraftedEvent, merge the ingredient arrays, and write to the craft result.