[Application] Failed to instantiate the default view controller for UIMainStoryboardFile 'Main' - pe...
出现下面的问题：
[Application] Failed to instantiate the default view controller for UIMainStoryboardFile 'Main' - perhaps the designated entry point is not set?
是由于Application不知道你要加载的默认页面是什么，勾选如下图选项即可解决