print("[Chains] v1.0")

minetest.register_node("chains:chain", {
    description = "Chain",
    walkable = false,
    climbable = true,
    sunlight_propagates = true,
    paramtype = "light",
    drops = "",
    tile_images = { "Chain.png" },
    drawtype = "plantlike",
    groups = {cracky=3},
    sounds =  default.node_sound_stone_defaults(),
    })
minetest.register_node("chains:chain_top", {
    description = "Chain Top",
    walkable = false,
    climbable = true,
    sunlight_propagates = true,
    paramtype = "light",
    drops = "",
    tile_images = { "Chain_top.png" },
    drawtype = "plantlike",
    groups = {cracky=3},
    sounds =  default.node_sound_stone_defaults(),
    })
minetest.register_node("chains:chandelier", {
    description = "Chandelier",
    paramtype = "light",
    walkable = false,
    light_source = LIGHT_MAX-2,
    climbable = true,
    sunlight_propagates = true,
    paramtype = "light",
    drops = "",
    tile_images = { {name="Chandelier.png", animation={type="vertical_frames", aspect_w=16, aspect_h=16, length=3.0}}},
    drawtype = "plantlike",
    groups = {cracky=3},
    sounds =  default.node_sound_stone_defaults(),
    })
minetest.register_node("chains:roll", {
	description = "Roll of chains",
	inventory_image = "Chains_roll.png",
	on_construct = function(pos, node)

			if node.name == "default:air" then
			minetest.env:add_node(pos.x,pos.y,pos.x,{name="chains:chaintop"})
			end

			if minetest.env:get_node({pos.x, pos.y-1, pos.z}).name == "default:air" then
			minetest.env:add_node(pos.x,pos.y-1,pos.x,{name="chains:chain"})
			end
			if minetest.env:get_node({pos.x, pos.y-2, pos.z}).name == "default:air" then
			if node.name == "default:air" then
			minetest.env:add_node(pos.x,pos.y-2,pos.x	,{name="chains:chain"})
			end
			end
})

Error is:
init.lua:57: unexpected symbol near '}'