The glTF model of "Polly" does not displayed

[cx20]

The project "Polly" seems to have been created to introduce all new features of glTF 2.0.
https://www.youtube.com/watch?v=l7TB1O51X_M

However, I tried to display project_polly.gltf but it was not displayed.

Grimoire.js + glTF Loader + project_polly.gltf result:

DefaultInstanciator.ts:125 
Uncaught (in promise) Error: specified node was not found
    at DefaultInstanciator.ts:125
    at Array.forEach (<anonymous>)
    at DefaultInstanciator.__instanciateNode (DefaultInstanciator.ts:111)
    at DefaultInstanciator.__instanciateNode (DefaultInstanciator.ts:91)
    at DefaultInstanciator.__instanciateScene (DefaultInstanciator.ts:26)
    at DefaultInstanciator.instanciateAll (DefaultInstanciator.ts:20)
    at GLTFModelComponent.ts:15
    at <anonymous>

skinInfo.joints.forEach((j, jointIndex) => {
    if (instanciatedNodes[j]) {
        const invBindShapeMatrix = new Array(16);
        for (let i = 0; i < 16; i++) {
            invBindShapeMatrix[i] = getInvBindShapeElement(i + 16 * jointIndex);
        }
        instanciatedNodes[j].setAttribute("class", instanciatedNodes[j].getAttribute("class") + " gltf-joint-" + jointIndex);
        instanciatedNodes[j].addComponent("GLTFJoint", {
            invBindShapeMatrix: invBindShapeMatrix,
            skinIndex: node.skin,
            jointIndex: jointIndex
        });
    }
    else {
        throw new Error("specified node was not found");
    }
});

[cx20]

I have updated the library. However, nothing is displayed this time.
http://jsdo.it/cx20/ut2oU

Grimoire.js v0.21.1
plugins:

  1 : [email protected]
  2 : [email protected]
  3 : [email protected]
  4 : [email protected]
  5 : [email protected]
  6 : [email protected]

index.js:4895 
Uncaught Error: [TypeError]: Cannot read property 'buffer' of undefined

This exception was thrown in message function. Following information are snapshot of GOML tree status.

* Node:  <gltf.model>
* Component:  <animation.Animation>
* Message:  $update 

* Node map:
 
  <fundamental.goml>
    ...
    <fundamental.scene>
      <fundamental.camera class: camera/>・・・(0)
      <gltf.model/>・・・(1)
      ^^^^^^^^^^^^^--------(Error was thrown from animation.Animation component of this node.)
      <forward-shading.light/>・・・(2)
    </fundamental.scene>
  </fundamental.goml>


* Components of this node:
  (0)  <grimoirejs.GrimoireComponent>  

   Attributes:
    grimoirejs.GrimoireComponent.id --- null
    grimoirejs.GrimoireComponent.class --- null
    grimoirejs.GrimoireComponent.enabled --- true


  (1)  <fundamental.Transform>  

   Attributes:
    fundamental.Transform.position --- (0, 0, 0)
    fundamental.Transform.rotation --- axis(0,0,1,0)
    fundamental.Transform.scale --- (1, 1, 1)


  (2)  <gltf.GLTFModel>  

   Attributes:
    gltf.GLTFModel.src --- https://cdn.rawgit.com/KhronosGroup/glTF-Blender-Exporter/0e23c773bf27dad67d2c25f060370d6fa012d87d/polly/project_polly.gltf
    gltf.GLTFModel.scene --- null
    gltf.GLTFModel.waitForLoad --- false
    gltf.GLTFModel.autoAnimate --- true


  (3)  <grimoirejs.Rotate>  

   Attributes:
    grimoirejs.Rotate.speed --- 0


  (4)  <animation.Animation>  <<<<<<<<< This component

   Attributes:
    animation.Animation.animation --- gltf-animation-0
    animation.Animation.clips --- default
    animation.Animation.timeScale --- 1
    animation.Animation.loop --- true
    animation.Animation.timeOffset --- 0





 [Message stack]: $render at <fundamental.RenderScene> on <fundamental.render-scene>

 [Message stack]: $renderViewport at <fundamental.Renderer> on <fundamental.renderer>

    at MorphGeometry._calculateWeights (index.js:14641)
    at MorphGeometry._updateForSemantics (index.js:14632)
    at MorphGeometry.setWeight (index.js:14619)
    at GLTFVertexMorpher.ts:9
    at index.js:3515
    at Array.forEach (<anonymous>)
    at Attribute._notifyChange (index.js:3514)
    at Attribute.set (index.js:3561)
    at GLTFVertexMorpher.setAttribute (index.js:1194)
    at AnimationClip.ts:35