[LayaAirIDE 2.0]Unity插件导出模型

使用2.3.0版本Unity插件导出，在laya2.0.1工程上加载可以显示，在laya2.3.0的工程上报错
 
附件包含导出的资源文件，麻烦帮忙看下
 
Laya.Sprite3D.load("res/LayaScene_Model_71008/Model_71008.lh", Laya.Handler.create(null, function(sprite:Laya.Sprite3D):void {
scene.addChild(sprite);
sprite.transform.localScale = new Laya.Vector3(0.2, 0.2, 0.2);
}));
 
报错信息
Uncaught TypeError: Cannot read property 'transform' of undefined
    at SkinnedMeshRenderer._computeSubSkinnedData (laya.d3.js:24876)
    at SkinnedMeshRenderer._computeSkinnedData (laya.d3.js:24857)
    at SkinnedMeshRenderer._renderUpdate (laya.d3.js:24955)
    at RenderElement._render (laya.d3.js:13807)
    at RenderQueue._render (laya.d3.js:23353)
    at Scene3D._renderScene (laya.d3.js:24583)
    at Camera.render (laya.d3.js:13641)
    at Scene3D.renderSubmit (laya.d3.js:24757)
    at Context.submitElement (laya.core.js:9341)
    at Context.flush (laya.core.js:9347)