It's just the following over and over again:
NullReferenceException
UnityEngine.Transform.get_position () (at <801ef9485ea54ad392ab1752511dc748>:0)
SharedN.UpdatingLine.setPosition () (at <cddfb250f27c4a1eacb136991c58c497>:0)
SharedN.UpdatingLine.Update () (at <cddfb250f27c4a1eacb136991c58c497>:0)
That should narrow it down for you I guess :)