Why is hit a nil value if i use FindPartOnRayWithIgnoreList?

Here is my code in a tool with a handle

tool = script.Parent
handle = tool:WaitForChild("Handle")


tool.Equipped:Connect(function(mouse)
    if mouse then
        mouse.Icon = "rbxassetid://316279304"

tool.Activated:connect(function()
        tool.Firing:Play()
          local ray = Ray.new(tool.Handle.CFrame.p, (mouse.Hit.p -  tool.Part.CFrame.p).unit*300)

local hit, position = game.Workspace:FindPartOnRayWithIgnoreList(ray, {game:GetService("Players").LocalPlayer.Character,tool.Handle})
--if i use just FindPartOnRay and ignore only the player it will work and hit will not be a null value??


if hit then
print(hit.Name)
else
print("Error")
end



        end)
    end
end)