Came here looking into TeamAOF/Craftoria#253

Looks like this is caused by item tags missing since 1.21.1 uses item tags to pick items that are compatible with certain enchants.

minecraft:enchantable/durability for mending (#minecraft:bow tag doesnt seem to be in this tag for some reason)

https://github.com/TeamMetallurgy/Aquaculture/blob/release-1.21.1/src/main/resources/data/minecraft/tags/item/enchantable/durability.json

(or https://github.com/TeamMetallurgy/Aquaculture/blob/AQ2-1.21.1/src/main/resources/data/minecraft/tags/item/enchantable/durability.json if you prefer)

Might be worth going through the default minecraft enchantable tags to ensure there arent any others.