Fatal Error when Clicking the Settings tab

[ianpward]

start_wqthread + 13
2017-03-14 11:29:32.588 Inventory[42484:3812476] Sync: Connection[3]: Session[1]: Starting session for '/Users/ianward/Library/Developer/CoreSimulator/Devices/9BDACF71-A578-4B7F-9E96-B42A7B3F1AA9/data/Containers/Data/Application/76BA9D9D-9088-43AF-81D0-EA745FAF679F/Documents/realm-object-server/e25597ef88065c8e25de8e65a844c1d5/realm%3A%2F%2F127.0.0.1%3A9080%2FInventoryDemo'
2017-03-14 11:29:32.588 Inventory[42484:3812476] Sync: Connection[3]: Resolving '127.0.0.1:9080'
2017-03-14 11:29:32.588 Inventory[42484:3812476] Sync: Connection[3]: Connecting to endpoint '127.0.0.1:9080' (1/1)
2017-03-14 11:29:32.588 Inventory[42484:3812476] Sync: Connection[3]: Connected to endpoint '127.0.0.1:9080' (from '127.0.0.1:59537')
not processed.
2017-03-14 11:29:32.590 Inventory[42484:3812476] Sync: Connection[3]: Session[1]: Sending: BIND(server_path='/InventoryDemo', signed_user_token_size=561, need_file_ident_pair=0)
2017-03-14 11:29:32.590 Inventory[42484:3812476] Sync: Connection[3]: Session[1]: Sending: IDENT(server_file_ident=8879914354123761546, client_file_ident=1, client_file_ident_secret=4116966367839979738, scan_server_version=2, scan_client_version=2, latest_server_version=2, latest_server_session_ident=6697532683229990914)
change notification: SyncPermissionChange {
	id = 090CFAB9-0BD2-464A-864A-CA1A5BE7F23F;
	createdAt = 2017-03-14 18:29:32 +0000;
	updatedAt = 2017-03-14 18:29:32 +0000;
	statusMessage = (null);
	realmUrl = realm://127.0.0.1:9080/InventoryDemo;
	userId = *;
	statusCode = (null);
	mayManage = 0;
	mayRead = 1;
	mayWrite = 1;
}
2017-03-14 11:29:35.763919 Inventory[42484:3812242] [Warning] <_UIPopoverBackgroundVisualEffectView 0x7fed4353c500> is being asked to animate its opacity. This will cause the effect to appear broken until opacity returns to 1.
fatal error: unexpectedly found nil while unwrapping an Optional value
(lldb)