swift - Symbol not found: NSHTTPCookieStorage -

swift - Symbol not found: NSHTTPCookieStorage -

i'm new ios programming , experimenting swift. working fine until tried utilize facebook sdk. added new bridging header import facebooksdk, , in view controller have

var fbl: fbloginview = fbloginview()

but line gives me error when deploying app phone, , crashes app launch. error code is:

dyld: symbol not found: _objc_class_$_nshttpcookiestorage

when using simulator tho, works fine. reason error?

did import foundation?

import foundation

swift xcode6