[LayaAirIDE 2.0]unity3d导出的刚体模型，加载报错

Uncaught TypeError: Cannot read property 'layaMotionState_create' of undefined
    at Rigidbody3D._onAdded (libs/laya.d3.js:4824)
    at MeshSprite3D._addComponentInstance (libs/laya.core.js:13911)
    at MeshSprite3D.addComponent (libs/laya.core.js:13958)
    at Function._createComponentInstance (libs/laya.d3.js:30948)
    at Function._createComponentInstance (libs/laya.d3.js:30940)
    at Function._createNodeByJson02 (libs/laya.d3.js:30961)
    at Function._parseScene (libs/laya.d3.js:30992)
    at _onHierarchyInnerFirstLevResouLoaded (libs/laya.d3.js:32688)
    at Handler.runWith (libs/laya.core.js:1000)
    at libs/laya.core.js:19383