java回掉js出错。求解答

版本2.1.1

js代码
start ()
{
cc.sdkTarget = this;
},
javaCallJs()
{
console.log(‘abc’)
},

java代碼

public  static void onWXShareCallback( final int errCode, final String openId )
{
    // 一定要在GL线程中执行
     ((Cocos2dxActivity)Cocos2dxActivity.getContext()).runOnGLThread(new Runnable()
     {
        @Override
        public void run()
        {
            String str = "cc.sdkTarget.javaCallJs()";
            Log.d("jsCall", str );
            Cocos2dxJavascriptJavaBridge.evalString( str );
        }
    });

}

抱錯
2019-08-21 11:16:41.589 11865-11909/com.lezizi.caihongcheng E/jswrapper: ERROR: Uncaught TypeError: Cannot read property ‘toString’ of undefined, location: src/cocos2d-jsb.5ed81.js:0:0
STACK:
[0]set@src/cocos2d-jsb.5ed81.js:14276
[1]javaCallJs@src/project.89736.js:52
[2]anonymous@(no filename):1
2019-08-21 11:16:41.589 11865-11909/com.lezizi.caihongcheng E/jswrapper: ScriptEngine::evalString script (no filename), failed!

请问一下问题解决了吗