sorry, i'm post fail.

[ninenox-dev]

2016-08-23 16:37:38.115 FBLoginSwift[1505:1087947] *** Terminating app due to uncaught exception 'NSGenericException', reason: 'Your application has presented a UIAlertController (<UIAlertController: 0x100992750>) of style UIAlertControllerStyleActionSheet. The modalPresentationStyle of a UIAlertController with this style is UIModalPresentationPopover. You must provide location information for this popover through the alert controller's popoverPresentationController. You must provide either a sourceView and sourceRect or a barButtonItem. If this information is not known when you present the alert controller, you may provide it in the UIPopoverPresentationControllerDelegate method -prepareForPopoverPresentation.'
*** First throw call stack:
(0x18234adb0 0x1819aff80 0x187ded268 0x187801fb0 0x1878000c8 0x1877530c8 0x187760a80 0x1874925a4 0x182300728 0x1822fe4cc 0x1822fe8fc 0x182228c50 0x183b10088 0x18750a088 0x100006294 0x181dc68b8)
libc++abi.dylib: terminating with uncaught exception of type NSException
(lldb)