It worked fine on version 6.0 and stopped working on 6.1
I think it doesn't generate something in logs
ServerEvents.recipes(e => {
e.forEachRecipe({ type: 'minecraft:crafting_shaped', output: '#minecraft:slabs' }, r => {
let ingredients = r.originalRecipeIngredients
let output = r.originalRecipeResult
e.shapeless(Item.of(output.id, 2), [ingredients[0], `#${ct}saws`]).damageIngredient(`#${ct}saws`).id(r.getOrCreateId())
})
})


