1.9.3的项目升级到2.1.0后会不定时报Cannot read property '_renderFlag' of nul,伤脑筋,敢问大佬这是怎么出现的呢,1.9.3的项目已经上线很久了,一直没有问题的,升级之后出现的问题

Simulator: E/jswrapper (271): ERROR: Uncaught TypeError: Cannot read property ‘_renderFlag’ of null, location: src/cocos2d-jsb.js:0:0

Simulator: E/jswrapper (521): [ERROR] (…\cocos\scripting\js-bindings\jswrapper\v8\Object.cpp, 521): Invoking function (0B634940) failed!

Simulator: D/jswrapper (129): JS: [WARN]: object already destroyed 还多出来这个,之前是没有的

排查一下吧,对象被卸载了