我没有修改程序，突然发现异常了，报如下异常了
[kanata] <Error: Phys3D is not exist !>
Error: Phys3D is not exist !
    at Object.error (https://lib/WAXRFrameRenderContext.js:1:167462)
    at u (https://lib/WAXRFrameRenderContext.js:1:168415)
    at e.CREATE_INSTANCE (https://lib/WAXRFrameRenderContext.js:1:266011)
    at t._initScene (https://lib/WAXRFrameRenderContext.js:1:915897)
    at e._appendChild (https://lib/WAXRFrameRenderContext.js:1:903400)
    at e.appendChild (https://lib/WAXRFrameRenderContext.js:1:955329)
    at https://lib/WAXRFrameRenderContext.js:1:1402911
    at w (https://lib/WAXRFrameRenderContext.js:1:1403183)
    at f.insertChildToElement (https://lib/WAXRFrameRenderContext.js:1:1404389)
    at S (https://lib/WAXRFrameRenderContext.js:1:1405948)