error when using look vector. how do I fix this?

local player = game.Players.LocalPlayer
local event = game.ReplicatedStorage.RemoteEvent
local mouse = player:GetMouse()
local part = game.Workspace.FollowPart
local followPart = game.ReplicatedStorage.Part
local e = mouse.Hit.p
local f = true
if f == false then part.Transparency = 1
	end
script.Parent.Activated:Connect(function()
	
		f = true
		if f == true then
	part.Transparency = 0.6
		mouse.Move:Connect(function()
part.CFrame = CFrame.new(mouse.Hit.p).lookVector()


			part.Size = followPart.Size
			part.BrickColor = followPart.BrickColor
		end)
		end
end)

Players.bittyboy1234.Backpack.Tool.FollowPart:17: attempt to call a Vector3 value

its giving me this error from this line of code:~~~~~~~~~~~~~~~~~ part.CFrame = CFrame.new(mouse.Hit.p).lookVector()

how do I fix this?