I have just updated all nuget packages and the ASP.NET MVC ServiceStack code stopped working with this runtime error:
System.Reflection.AmbiguousMatchException: 'Could not register Request 'ServiceStack.Register' with service 'ServiceStack.Auth.RegisterService' as it has already been assigned to another service.
Each Request DTO can only be handled by 1 service.'
No change of the code has been made. Only update of nuget packages.
What could be the cause? How to troubleshoot?
OK have found the cause:
The functionality of
IncludeRegistrationService = true
has apparently changed.