开发笔记 Cocos Creator打包报错： Undefined symbol: _OBJC_CLASS_$_AVPlayerViewController 旧工程升级CocosCreator以后打包时出现了奇怪的错误。
开发笔记 Cocos Creator 报错：The sandbox is not in sync with the Podfile.lock. Run 'pod install' or update your CocoaPods installation. 用CocoaPods接入Firebase、Admob等SDK时，遇到的奇怪错误。