Service does not exist

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Steps to follow : Added SQL Server to Start step... I'm running MS SQL 2016 Developer version

at Warewolf.Studio.ServerProxyLayer.QueryManagerProxy.FetchDbSources()
at Warewolf.Studio.ViewModels.ManageDbServiceModel.RetrieveSources()
at Dev2.Activities.Designers2.Core.Source.DatabaseSourceRegion..ctor(IDbServiceModel model, ModelItem modelItem, enSourceType type)
at Dev2.Activities.Designers2.SqlServerDatabase.SqlServerDatabaseDesignerViewModel.BuildRegions()
at Dev2.Activities.Designers2.SqlServerDatabase.SqlServerDatabaseDesignerViewModel.InitialiseViewModel(IManageDatabaseInputViewModel manageServiceInputViewModel)
at Dev2.Activities.Designers2.SqlServerDatabase.SqlServerDatabaseDesignerViewModel.SetupCommonProperties()
at Dev2.Activities.Designers2.SqlServerDatabase.SqlServerDatabaseDesignerViewModel..ctor(ModelItem modelItem)
at Dev2.Activities.Designers2.SqlServerDatabase.SqlServerDatabaseDesigner.CreateViewModel()
at Dev2.Activities.Designers2.Core.ActivityDesigner`1.OnLoaded()
at Dev2.Activities.Designers2.Core.ActivityDesigner`1.OnRoutedEventHandler(Object sender, RoutedEventArgs args)
at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
at System.Windows.UIElement.RaiseEventImpl(DependencyObject sender, RoutedEventArgs args)
at System.Windows.UIElement.RaiseEvent(RoutedEventArgs e)
at System.Windows.BroadcastEventHelper.BroadcastEvent(DependencyObject root, RoutedEvent routedEvent)
at System.Windows.BroadcastEventHelper.BroadcastLoadedEvent(Object root)
at MS.Internal.LoadedOrUnloadedOperation.DoWork()
at System.Windows.Media.MediaContext.FireLoadedPendingCallbacks()
at System.Windows.Media.MediaContext.FireInvokeOnRenderCallbacks()
at System.Windows.Media.MediaContext.RenderMessageHandlerCore(Object resizedCompositionTarget)
at System.Windows.Media.MediaContext.RenderMessageHandler(Object resizedCompositionTarget)
at System.Windows.Threading.ExceptionWrapper.InternalRealCall(Delegate callback, Object args, Int32 numArgs)
at System.Windows.Threading.ExceptionWrapper.TryCatchWhen(Object source, Delegate callback, Object args, Int32 numArgs, Delegate catchHandler)