I have had a crash when I run the app in a real iPhone.
In order to solve it I have added the “RxRelay.framework” in the “Koober” target of the “KooberApp” project (I mean, inside the “Embed Frameworks” section).
Note: To work with Xcode 10.2.1 I have had to update the RxSwift version in the Cartfile according to:
github “mxcl/PromiseKit” “6.8.4”
github “onevcat/Kingfisher” “5.3.1”
github “ReactiveX/RxSwift” “5.0.1”