var myData ={}
        myData = {
          "capacity": 10,
          "emitRate": 5,
          "size":[1],
          "startColor":[1,1,0,1],
          "endColor":[1,1,0,1],
          "emitterType":"SphereShape",
          "emitterProps": [["radius","0.1"]],
          "stopDuration":3,
          "lifeTime":[3],
          "texture":"orb", // xxx为纹理的url
          "speed":[0.5],
        }
        const particleSystemElement = xrScene.getElementById("lizi"); // xxx为粒子系统的id命名
        this.tempSystem = particleSystemElement.getComponent(xrFrameSystem.Particle)

        var subEmitter =  this.tempSystem.createSubEmitter(myData)
        
        subEmitter.state = 0
               this.tempSystem.subEmitters=[subEmitter]

调用subEmitters添加子发射器时报错，我试了demo案例里的粒子案例里面的内容一样会有这个报错