custom craftinng recipe not working 1.21

im making this datapack witch gives me a custom crafting recipe but it isnt working, this is the code: { "type": "minecraft:crafting_shaped", "pattern": [ " #/", " //", " " ], "key": { "#": { "item": "minecraft:fern" }, "/": { "item": "minecraft:paper" } }, "result": { "item": "minecraft:cooked_rabbit, "count": 4 } } i also have a texture pack