Ran into bug making a detect part ray?

So im trying to make a script that uses a ray to detect a part, and then makes that part a frame, but i ran into a bug, any help?

local Board = game.Workspace.Board

while wait(0) do        
        local ray = Ray.new(script.Parent.CFrame.p, (script.Parent.CFrame.p).unit * 300)
        local part, position = workspace:FindPartOnRay(ray, script.Parent, false, true)

        local beam = Instance.new("Part", workspace)
        beam.BrickColor = BrickColor.new("Bright red")
        beam.FormFactor = "Custom"
        beam.Material = "Neon"
        beam.Transparency = 0.25
        beam.Anchored = true
        beam.Locked = true
        beam.CanCollide = false

        local distance = (script.Parent.CFrame.p - position).magnitude
        beam.Size = Vector3.new(0.3, 0.3, distance)
        beam.CFrame = CFrame.new(script.Parent.CFrame.p, position) * CFrame.new(0, 0, -distance / 2)
        game:GetService("Debris"):AddItem(beam, 0.1)
    if part then    
            local newFrame = Instance.new("Frame",game.Workspace.Board.SurfaceGui)
            newFrame.Size.X = part.Size.X
            newFrame.Size.Y = part.Size.Y   
            newFrame.BorderSizePixel = 0
            newFrame.BackgroundColor3 = Color3.fromRGB(part.Color)
    end         
    end