Cant settle ticket with multiple payments

I was working on ticket closing rules for the KDS and now I cant settle tickets in Cash & Card, only cash OR card:
To be clear, I can settle a $100 ticket/bill in 2 x $50 if they all cash or either card but I can not settle $50 Cash & $50 card for one ticket.

I get the following error:

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[General Info]

Application: SambaPOS
Version:     5.5.0
Region:      en
DB:          SQ
Machine:     NMCBAR
User:        steve
Date:        2023/11/01
Time:        13:00

User Explanation:

steve said ""
-----------------------------

[Exception Info 1]

Top-level Exception
Type:        System.NullReferenceException
Message:     Object reference not set to an instance of an object.
Source:      Samba.Services
Stack Trace: at Samba.Services.ActionProcessors.PrinterModule.ExecutePrintJob.Process(ActionData actionData, RuleExecutionContext context)
   at Samba.Services.Common.RuleActionTypeRegistry.ProcessAction(String actionType, ActionData actionData, RuleExecutionContext context)
   at Samba.Services.Implementations.AutomationModule.AutomationService.ProcessAction(String actionType, ActionData actionData, RuleExecutionContext context)
   at Samba.Services.Implementations.AutomationModule.ActionDataBuilder.<>c__DisplayClass13_0.<InvokeWith>b__0()
   at System.Windows.Threading.Dispatcher.Invoke(Action callback, DispatcherPriority priority, CancellationToken cancellationToken, TimeSpan timeout)
   at System.Windows.Threading.Dispatcher.Invoke(Action callback)
   at Samba.Services.Implementations.AutomationModule.ActionDataBuilder.InvokeWith(AppState appState, RuleExecutionContext context)
   at Samba.Services.Implementations.AutomationModule.RuleExecutor.ExecuteWithoutLogging(Object ruleData)
   at Samba.Services.Implementations.AutomationModule.RuleExecutor.ExecuteWith(Object dataParameter)
   at Samba.Services.Implementations.AutomationModule.NotificationService.NotifyEvent(String eventName, Object dataParameter, AppState appState)
   at Samba.Services.Implementations.TicketModule.TicketServiceBase.AddPayment(Ticket ticket, PaymentType paymentType, Account account, Decimal amount, Decimal tenderedAmount, String description, AppState appState, Action`1 onError, String payData)
   at Samba.Presentation.Services.Implementations.TicketModule.TicketService.AddPayment(Ticket ticket, PaymentType paymentType, Account account, Decimal amount, Decimal tenderedAmount, String description, Action`1 onError)
   at Samba.Presentation.ClientLibrary.Modules.PosModule.Payments.PaymentEditor.UpdateTicketPayment(PaymentType paymentType, IList`1 changePayments, Account paymentAccount, Decimal paymentDueAmount, Decimal paidAmount, Decimal tenderedAmount, String description)
   at Samba.Presentation.ClientLibrary.Modules.PosModule.Payments.PaymentEditorViewModel.(PaymentType , IList`1 , Account , Decimal , Decimal , String )
   at Samba.Presentation.ClientLibrary.Modules.PosModule.Payments.PaymentEditorViewModel.(PaymentType )
   at Samba.Presentation.ClientLibrary.Modules.PosModule.Payments.PaymentEditorViewModel.(PaymentType )
   at Microsoft.Practices.Prism.Commands.DelegateCommand`1.<>c__DisplayClass6.<.ctor>b__2(Object o)
   at Microsoft.Practices.Prism.Commands.DelegateCommandBase.Execute(Object parameter)
   at Microsoft.Practices.Prism.Commands.DelegateCommandBase.System.Windows.Input.ICommand.Execute(Object parameter)
   at MS.Internal.Commands.CommandHelpers.CriticalExecuteCommandSource(ICommandSource commandSource, Boolean userInitiated)
   at System.Windows.Controls.Primitives.ButtonBase.OnClick()
   at System.Windows.Controls.Button.OnClick()
   at System.Windows.Controls.Primitives.ButtonBase.OnMouseLeftButtonUp(MouseButtonEventArgs e)
   at System.Windows.UIElement.OnMouseLeftButtonUpThunk(Object sender, MouseButtonEventArgs e)
   at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
   at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   at System.Windows.RoutedEventHandlerInfo.InvokeHandler(Object target, RoutedEventArgs routedEventArgs)
   at System.Windows.EventRoute.InvokeHandlersImpl(Object source, RoutedEventArgs args, Boolean reRaised)
   at System.Windows.UIElement.ReRaiseEventAs(DependencyObject sender, RoutedEventArgs args, RoutedEvent newEvent)
   at System.Windows.UIElement.OnMouseUpThunk(Object sender, MouseButtonEventArgs e)
   at System.Windows.Input.MouseButtonEventArgs.InvokeEventHandler(Delegate genericHandler, Object genericTarget)
   at System.Windows.RoutedEventArgs.InvokeHandler(Delegate handler, Object target)
   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.RaiseTrustedEvent(RoutedEventArgs args)
   at System.Windows.UIElement.RaiseEvent(RoutedEventArgs args, Boolean trusted)
   at System.Windows.Input.InputManager.ProcessStagingArea()
   at System.Windows.Input.InputManager.ProcessInput(InputEventArgs input)
   at System.Windows.Input.InputProviderSite.ReportInput(InputReport inputReport)
   at System.Windows.Interop.HwndMouseInputProvider.ReportInput(IntPtr hwnd, InputMode mode, Int32 timestamp, RawMouseActions actions, Int32 x, Int32 y, Int32 wheel)
   at System.Windows.Interop.HwndMouseInputProvider.FilterMessage(IntPtr hwnd, WindowMessage msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at System.Windows.Interop.HwndSource.InputFilterMessage(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndWrapper.WndProc(IntPtr hwnd, Int32 msg, IntPtr wParam, IntPtr lParam, Boolean& handled)
   at MS.Win32.HwndSubclass.DispatcherCallbackOperation(Object o)
   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)

-----------------------------

[Assembly Info]

mscorlib, Version=4.0.0.0
System, Version=4.0.0.0
Samba.Services, Version=5.5.8206.19287
Samba.Domain, Version=5.5.8206.19286
Samba.Infrastructure.Data, Version=5.5.8206.19285
System.ComponentModel.Composition, Version=4.0.0.0
Samba.Presentation.Services, Version=5.5.8206.19290
System.Core, Version=4.0.0.0
PresentationCore, Version=4.0.0.0
WindowsBase, Version=4.0.0.0
PresentationFramework, Version=4.0.0.0
DevExpress.Xpf.LayoutControl.v17.2, Version=17.2.13.0
System.Xml, Version=4.0.0.0
DevExpress.Xpf.Grid.v17.2, Version=17.2.13.0
DevExpress.Xpf.Grid.v17.2.Core, Version=17.2.13.0
System.Xaml, Version=4.0.0.0
Samba.Infrastructure, Version=5.5.8206.19282
Microsoft.Practices.Prism, Version=4.0.0.0
System.Runtime.Serialization, Version=4.0.0.0
Microsoft.Practices.Prism.MefExtensions, Version=4.0.0.0
DevExpress.Xpf.Core.v17.2, Version=17.2.13.0
System.Windows.Forms, Version=4.0.0.0
System.Drawing, Version=4.0.0.0
Samba.Persistance, Version=5.5.8206.19286
Stateless, Version=1.0.0.0
PropertyTools, Version=2012.4.14.1
Samba.Localization, Version=5.3.8206.19283
ReachFramework, Version=4.0.0.0
EntityFramework, Version=6.0.0.0
FluentValidation, Version=3.4.0.0
NCalc, Version=1.3.8.0
Microsoft.CSharp, Version=4.0.0.0
Omu.ValueInjecter, Version=2.3.0.0
Microsoft.Practices.ServiceLocation, Version=1.0.0.0
DevExpress.Data.v17.2, Version=17.2.13.0
WindowsInput, Version=1.0.4.0

-----------------------------

[System Info]

Operating System
-Microsoft Windows 10 Pro
--CodeSet = 1252
--CSDVersion = 
--CurrentTimeZone = 120
--FreePhysicalMemory = 636864
--OSArchitecture = 64-bit
--OSLanguage = 1033
--ServicePackMajorVersion = 0
--ServicePackMinorVersion = 0
--Version = 10.0.19045

Machine
-NMCBAR
--Manufacturer = Dell Inc.
--Model = OptiPlex 7010
--TotalPhysicalMemory = 2026434560
--UserName = NMCBAR\steve

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First line sugests posibly a printing setup issue, you print automatically on payment?