Should this be a 401 instead of a 200 and/or a more meaningful error message?
2019-03-20 13:49:19.793 [NONE]:ERROR:Unhandled Error in ServiceStack Service from /auth System.NotImplementedException: Could not find method named Put(Authenticate) or Any(Authenticate) on Service AuthenticateService
at ServiceStack.Host.ServiceExec`1.Execute(IRequest request, Object instance, Object requestDto, String requestName)
at ServiceStack.Host.ServiceController.ManagedServiceExec(ServiceExecFn serviceExec, IService service, IRequest request, Object requestDto)
at ServiceStack.Host.ServiceController.ExecuteAsync(Object requestDto, IRequest req)
at ServiceStack.Host.RestHandler.ProcessRequestAsync(IRequest req, IResponse httpRes, String operationName)