将'rayOrigin: mouse‘添加到Aframe光标组件引发错误

Question

我正在尝试包括一个鼠标点击功能，以VR场景除了焦点光标。我使用它的方法如下：

 <a-entity camera look-controls mouse-cursor>
    <a-entity position="0 0 -3" scale="0.2 0.2 0.2" geometry="primitive: ring; radiusOuter: 0.20;radiusInner: 0.10;" material="color: #990000; shader: flat" cursor=" fuse: true; rayOrigin: mouse">

    </a-entity>
</a-entity>

下面是使用此代码时出现的错误。请注意，我使用的是带有Angular2的Afrmae

 ERROR TypeError: Cannot read property 'count' of undefined
at Mesh.raycast (aframe-master.js:21938)
at intersectObject (aframe-master.js:45999)
at Raycaster.intersectObjects (aframe-master.js:46072)
at NewComponent.module.exports.Component.registerComponent.tick (aframe-master.js:69697)
at HTMLElement.value (aframe-master.js:76597)
at HTMLElement.value (aframe-master.js:76645)
at bound (aframe-master.js:79931)
at ZoneDelegate.webpackJsonp.../../../../zone.js/dist/zone.js.ZoneDelegate.invokeTask (zone.js:425)
at Object.onInvokeTask (core.es5.js:3881)
at ZoneDelegate.webpackJsonp.../../../../zone.js/dist/zone.js.ZoneDelegate.invokeTask (zone.js:424)