meteor-ios demo todos list data is empty.

[chenyishun]

meteor-ios demo todos list data is empty.
I basically cloned the Todos example from meteor.com, and the meteor-ios repository,The web app and iso demo todos runs fine (locally)
Add data to the list to appear as the following error：
2016-05-14 08:46:48.055 Todos[17625:1011800] Communications error: <OS_xpc_error: <error: 0x10c65bb40> { count = 1, contents =
"XPCErrorDescription" => <string: 0x10c65bef0> { length = 22, contents = "Connection interrupted" }
}>
2016-05-14 08:53:40.552 Todos[17625:1017304] Communications error: <OS_xpc_error: <error: 0x10c65bb40> { count = 1, contents =
"XPCErrorDescription" => <string: 0x10c65bef0> { length = 22, contents = "Connection interrupted" }
}>
2016-05-14 10:48:05.891 Todos[17625:1008339] CoreData: warning: An NSManagedObjectContext delegate overrode fault handling behavior to silently delete the object with ID '0x7f999bec7930 x-coredata://4807EAA2-548B-4F06-BA1B-1E034E2ED6A8-17625-000075C0091FA3A3/List/pnNxGR3gJScwvctwfR' and substitute nil/0 for all property values instead of throwing.