Hi @Marcus_W3
var camera = new BABYLON.ArcRotateCamera(“Camera”, 0.0, 0.9, 10, BABYLON.Vector3(0.0, 10.0, 0.0), scene);
BABYLON.Vector3 is a constructor. It looks like you missed the ‘new’ keyword.
var camera = new BABYLON.ArcRotateCamera(“Camera”, 0.0, 0.9, 10, new BABYLON.Vector3(0.0, 10.0, 0.0), scene);