BabylonJS: Imported model does not appear in AR mode

I am just starting with using ZapWorks and BabylonJS. I have a car model that appears in normal BabylonJS, but when I enable the ZapWorks camera, the car doesn’t show.

BABYLON.SceneLoader.ImportMeshAsync("", "./", "Ferarri-Testarossa-2.glb")
  .then((result) => {
    result.meshes[0].scaling = new BABYLON.Vector3(0.25, 0.25, 0.25);
    result.meshes[0].parent = trackerTransformNode;

In the console, I see the following error, but only when using ZapWorks:

[.WebGL-000038720099A300] GL_INVALID_OPERATION: Must have element array buffer bound.