[]js中使用sharedMesh报错

我参照示例里面想给自己导入的3D模型添加控制器来增加点击事件，但是现在到这一步试运行就报错了。
代码：

    //仓库原型

    warehouse1 = Laya.MeshSprite3D.load("model/warehouse/1.lh");

    scene.addChild(warehouse1);

    warehouse1.transform.rotate(new Laya.Vector3(0, 0, 0), false, false);

    warehouse1.transform.translate(new Laya.Vector3(-25,0,0),false);

    warehouse1.name = "仓库1";

    var warehouseCollider1 = warehouse1.addComponent(Laya.MeshCollider);

    warehouseCollider1.mesh = warehouse1.meshFilter.sharedMesh;

错误信息：

TypeError: Cannot read property 'sharedMesh' of undefined
at onComplete (file:///E:/LayaWorkspace/javaScriptLaya/src/warehouse.js:129:52)
at Handler.__proto.run (file:///E:/LayaWorkspace/javaScriptLaya/bin/libs/laya.core.js:693:26)
at ResInfo.onLoaded (file:///E:/LayaWorkspace/javaScriptLaya/bin/libs/laya.core.js:12657:28)
at EventHandler.__proto.runWith (file:///E:/LayaWorkspace/javaScriptLaya/bin/libs/laya.core.js:709:27)
at ResInfo.__proto.event (file:///E:/LayaWorkspace/javaScriptLaya/bin/libs/laya.core.js:479:28)
at LoaderManager.__proto._endLoad (file:///E:/LayaWorkspace/javaScriptLaya/bin/libs/laya.core.js:12775:11)
at Loader.onLoaded (file:///E:/LayaWorkspace/javaScriptLaya/bin/libs/laya.core.js:12752:10)
at EventHandler.__proto.runWith (file:///E:/LayaWorkspace/javaScriptLaya/bin/libs/laya.core.js:709:27)
at Loader.__proto.event (file:///E:/LayaWorkspace/javaScriptLaya/bin/libs/laya.core.js:479:28)
at Loader.__proto.endLoad (file:///E:/LayaWorkspace/javaScriptLaya/bin/libs/laya.core.js:12404:8)