Does it only work on Minecraft v.1.8.8?

[robert-dzikowski]

I try tried to run it using Minecraft 1.19.4., but I got error

thread 'main' panicked at 'called `Option::unwrap()` on a `None` value', src\minecraft\block_state.rs:285:14

[Caellian]

Yes, it seems hematite currently doesn't handle blocks in the world file which are missing from its data (src/minecraft/data_1_8_pre2.rs).