Do you happen to get a stack trace or actual error message for this exception? this seems to be unrelated to Swift, just something general going wrong inside the SDK. Looking thri the code, there’s a few instances that throw this exception, all with proper error messages such as “Target URL now assigned” or “Channel not assigned”.
This seems wrong, on its own — surely the service needs to be configured more with an URL or with a channel/message, eg
var Servicio = Service1_Proxy.init(targetURL: ..., servicename: ...)