“错误:这个对象在脱机缓存中不可用”只在解析后端出现过几次

i currently added parse backend to my ios project and defined it to work with its local data storage. it all seems to work fine except of sometimes i receive "This object is not available in the offline cache" all tough as far as i understood there is no cache at all when using local data store (enabling it in my AppDelegate like this: [Parse enableLocalDatastore];). the problem is if i reopen the app, eventually that object will be retrieved successfully. has anyone encountered this problem before?i currently added parse backend to my ios proje