/Users/auron/Documents/cocos2d-x-3.4/cocos/ui/UIWebViewImpl-ios.mm:221:26: Called object type ‘std::function<void (std::string)>’ is not a function or function pointer
/Users/auron/Documents/cocos2d-x-3.4/cocos/ui/UIWebViewImpl-ios.mm:225:39: Called object type ‘std::function<bool (std::string)>’ is not a function or function pointer
/Users/auron/Documents/cocos2d-x-3.4/cocos/ui/UIWebViewImpl-ios.mm:233:30: Called object type ‘std::function<void (std::string)>’ is not a function or function pointer
/Users/auron/Documents/cocos2d-x-3.4/cocos/ui/UIWebViewImpl-ios.mm:241:32: Called object type ‘std::function<void (std::string)>’ is not a function or function pointer
请问如何解决啊？？？？