Uncaught TypeError: Cannot read property 'height' of null
at TheClass.setContentSize (CCScale9Sprite.js:1240)
at onResourceDataLoaded (CCScale9Sprite.js:1198)
at TheClass.setSpriteFrame (CCScale9Sprite.js:1204)
at cc_Sprite._onTextureLoaded (CCSprite.js:540)
at cc_Sprite._applySpriteFrame (CCSprite.js:559)
at cc_Sprite._initSgNode (CCSprite.js:585)
at cc_Sprite.__preload (CCRendererUnderSG.js:60)
at CCClass.eval [as _invoke] (eval at createInvokeImpl (component-scheduler.js:255), 
65)
at CCClass.invoke (node-activator.js:65)
at CCClass.activateNode (node-activator.js:225)
加载场景的时候碰到这个，请问大神是什么原因呢？卡这几天了