Hello! I'm trying to make a npc find when a player is in a radius of 200 and goes towards that player or me. I basically have just a normal script inside of the normal R16 Dummy. That is just named "Dummy". Anythings helps. Here is the script:

function findTarget()
	local dist = 200
	local target = nil
	for i,v in pairs(workspace:GetChildren()) do
		local humanoid = v:FindFirstChild("Humanoid")
		local head = v:FindFirstChild("Head")
		if humanoid and head and v.Name ~= "Dummy" then --Name all the Npc's you don't want getting attacked.
			if (head.Position - rootpart.Position).magnitude < dist and humanoid.Health > 0 then
				dist = (head.Position - rootpart.Position).magnitude
				target = head
			end
		end
	end
	return target
end

 while wait(1) do
	local head = findTarget()
	
	if head then
		local ray = Ray.new(rootpart.Position, (head.Position - rootpart).Unit * 200)
		local hit,position = workspace:FindPartOnRayWithIgnoreList(ray,  {script.Parent} )
		if hit then
			print(hit.Name)
			if hit.Parent:IsADescendantOf(head.Parent) then
				human:MoveTo(head.Position)
			else
				human:MoveTo(head.Position)
				wait(0.4)
				path = game:GetService("PathfindingService"):FindFirstPathAsync(rootpart.Position,head.Position)
				points = path:GetWaypoints()
				if path.Status == Enum.PathStatus.Success then
				for i,v in pairs (points) do
					human:MoveTo(v.Position)
					human.MoveToFinished:wait(2)
					if v.Action == Enum.PathWaypointAction.Jump then
						human.Jump = true
					end
					if (points[#points].Position - head.Position).magnitude > 15 then
						break
					end
				end
				else
					human:MoveTo(head.Positon)
			end
		end
	end
	end
	end

Also, in the Output its saying: "Workspace.Dummy.Script:24: bad argument #2 to '?' (Vector3 expected, got Object)" and points me to line 24: local ray = Ray.new(rootpart.Position, (head.Position - rootpart).Unit * 200) Maybe that's the issue? I have no idea, thought that would help.