1.21-pre4. Datapack recipes dont add

I need a custom recipes for my world, so I created the simplest datapack: pack.mcmeta: {"pack":{"pack_format":48,"description":"just a single recipe"}} recipe data/crafting/recipes/easy_gravel.json: { "type": "minecraft:crafting_shapeless", "ingredients": [ { "item": "minecraft:stone" }, { "item": "minecraft:cobblestone" }, { "item": "minecraft:sand" } ], "result": { "item": "minecraft:gravel", "count": 3 }, "group": "block" } but for some reason the recipe just dont add, but the datapack is active. did i made some mistake in meta files or is there any other solution?