cocos creator 1.9.1，打包的小程序，在微信开发者工具和小程序真机上面调试，调试API版本为1.9.94，执行wx.setNavigationBarTitle的时候就报错

WAGame.js:3 gameThirdScriptError

Cannot read property 'setNavigationTitle' of undefined;at setTimeout callback function

TypeError: Cannot read property 'setNavigationTitle' of undefined

    at CCClass.onLoad (http://127.0.0.1:61641/game/src/project.dev.48c96.js:1960:23)

    at callOnLoad (http://127.0.0.1:61641/game/cocos2d-js.b4b5f.js:27391:9)

    at CCClass._invoke (http://127.0.0.1:61641/game/cocos2d-js.b4b5f.js:13904:11)

    at CCClass.invoke (http://127.0.0.1:61641/game/cocos2d-js.b4b5f.js:13853:14)

    at CCClass.activateNode (http://127.0.0.1:61641/game/cocos2d-js.b4b5f.js:27503:23)

    at CCClass._onHierarchyChanged (http://127.0.0.1:61641/game/cocos2d-js.b4b5f.js:39040:83)

    at CCClass._onHierarchyChanged (http://127.0.0.1:61641/game/cocos2d-js.b4b5f.js:10021:14)

    at CCClass.setParent (http://127.0.0.1:61641/game/cocos2d-js.b4b5f.js:38836:30)

    at CCClass.addChild (http://127.0.0.1:61641/game/cocos2d-js.b4b5f.js:10449:22)

    at http://127.0.0.1:61641/game/src/project.dev.48c96.js:2330:22