Ios 设备缓存文件不'；不存在警告

我在iOs上使用Google Cast API 3.3.0.11401，一切正常，只是在应用程序发布时收到警告，说明某些设备缓存文件不存在（见下文）

我如何摆脱这些，它们是什么意思

+[NSMutableDictionary(GCKAdditions) gck_loadFromCacheWithName:] - Device cache file file://[PathToMySimulator]/data/Containers/Data/Application/[FolderOfMyApp]/Library/Caches/gck_nearby_devices.plist doesn't exist.
+[NSMutableDictionary(GCKAdditions) gck_loadFromCacheWithName:] - Device cache file file://[PathToMySimulator]/data/Containers/Data/Application/[FolderOfMyApp]/Library/Caches/gck_network_cache.plist doesn't exist.
+[NSMutableDictionary(GCKAdditions) gck_deleteCacheWithName:] - Device cache file file://[PathToMySimulator]/data/Containers/Data/Application/[FolderOfMyApp]/Library/Caches/gck_device_cache.plist doesn't exist.
+[NSMutableDictionary(GCKAdditions) gck_deleteCacheWithName:] - Device cache file file://[PathToMySimulator]/data/Containers/Data/Application/[FolderOfMyApp]/Library/Caches/gck_device_cache_v1.plist doesn't exist.
+[NSMutableDictionary(GCKAdditions) gck_deleteCacheWithName:] - Device cache file file://[PathToMySimulator]/data/Containers/Data/Application/[FolderOfMyApp]/Library/Caches/gck_device_cache_v2.plist doesn't exist.
+[NSMutableDictionary(GCKAdditions) gck_loadFromCacheWithName:] - Device cache file file://[PathToMySimulator]/data/Containers/Data/Application/[FolderOfMyApp]/Library/Caches/gck_device_cache_v3.plist doesn't exist.

（我看到的问题包含相同的错误消息，但它们都指向不同的问题，这些问题实际上与消息不对应）