datapack help treasure2

Hello, the creator of Treasure2 has made a new datapack to add items to chests in its latest version, 1.19.2.
This datapack is related to the Artifacts mod. They created this datapack as an example so that anyone could create their own datapack.
They also made one for the Corail Tombstone mod, but it's not working. They followed the same steps as in the previous one, but they can't get it to work.
datapack original 
my datapack 
If someone can help me, I've been trying and trying for about 6 hours.