fatal error: 'UBSignal.h' file not found

[evgeniyd]

The framework is installed via Carthage.
In attempt to import it,

#import <UberSignals/UberSignals.h>
// OR
@import UberSignals;

...a Could not build module 'UberSignals' error occurs:

While building module 'UberSignals' imported from /Users/admin/Developer/repo/demo-app/ExploreSF/ExploreSF/SignalTypes/EHRAvailableCountriesRequest.h:18:
In file included from <module-includes>:1:
/Users/admin/Developer/repo/demo-app/ExploreSF/Carthage/Build/iOS/UberSignals.framework/Headers/UberSignals.h:33:9: fatal error: 'UBSignal.h' file not found
#import "UBSignal.h"
        ^
1 error generated.
In file included from /Users/admin/Developer/repo/demo-app/ExploreSF/ExploreSF/SignalTypes/EHRAvailableCountriesRequest.m:9:
/Users/admin/Developer/repo/demo-app/ExploreSF/ExploreSF/SignalTypes/EHRAvailableCountriesRequest.h:18:9: fatal error: could not build module 'UberSignals'
@import UberSignals;
 ~~~~~~~^~~~~~~~~~~
2 errors generated.

Carthage 0.23.0
Xcode 8.3.2 (8E2002)