出现VR场景后，锁屏，再打开，VR场景就会消失，报以下错误。 MiniProgramError Cannot read property 'boundingSphere' of null TypeError: Cannot read property 'boundingSphere' of null at ImagePanorama.raycast (app-service.js:2855:103) at Tc (app-service.js:2588:55) at Jd.intersectObject (app-service.js:2935:295) at Ze.checkObjectIntersect (app-service.js:3913:45) at Ze.getTouchPosition (app-service.js:3908:19) at Ze.onTouchStart (app-service.js:4027:24) at Ze.P (WASubContext.js:2:2050144) at tt (WASubContext.js:2:2069263) at at (WASubContext.js:2:2087741) at Function. (WASubContext.js:2:2088136)