Something's up!

Need help!
I was inputting my tax template when all sudden error occur and now cannot do anything with it version 5.5.8.
Can someone help me.

[General Info]

Application: SambaPOS
Version: 5.5.8
Region: en
DB: SQ
Machine: KTOWN-SYS19
User: SYS19
Date: 5/9/2023
Time: 7:28 PM

User Explanation:

SYS19 said “”

[Exception Info 1]

Top-level Exception
Type: System.Reflection.TargetInvocationException
Message: Exception has been thrown by the target of an invocation.
Source: mscorlib
Stack Trace: at System.RuntimeMethodHandle.InvokeMethod(Object target, Object[] arguments, Signature sig, Boolean constructor)
at System.Reflection.RuntimeMethodInfo.UnsafeInvokeInternal(Object obj, Object[] parameters, Object[] arguments)
at System.Delegate.DynamicInvokeImpl(Object[] args)
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)

Inner Exception 1
Type: System.NullReferenceException
Message: Object reference not set to an instance of an object.
Source: Samba.Presentation.ClientLibrary
Stack Trace: at Samba.Presentation.ClientLibrary.Modules.PosModule.MenuItemSelectorViewModel.ResetCategory()
at Samba.Presentation.ClientLibrary.Modules.PosModule.PosViewModel.set_SelectedTicket(Ticket value)
at Samba.Presentation.ClientLibrary.Modules.PosModule.PosViewModel.()
at Samba.Presentation.ClientLibrary.Modules.PosModule.PosViewModel.(EventParameters1 ) at Microsoft.Practices.Prism.Events.EventSubscription1.InvokeAction(Action1 action, TPayload argument) at Microsoft.Practices.Prism.Events.EventSubscription1.<>c__DisplayClass2.b__0(Object[] arguments)
at Microsoft.Practices.Prism.Events.EventBase.InternalPublish(Object[] arguments)
at Microsoft.Practices.Prism.Events.CompositePresentationEvent`1.Publish(TPayload payload)
at Samba.Presentation.Services.Common.ExtensionMethods.Publish[TEventsubject](TEventsubject eventArgs, String eventTopic, Action expectedAction)


[Assembly Info]

mscorlib, Version=4.0.0.0
System, Version=4.0.0.0
Samba.Services, Version=5.5.8468.18572
Samba.Domain, Version=5.5.8468.18571
Samba.Infrastructure.Data, Version=5.5.8468.18571
System.ComponentModel.Composition, Version=4.0.0.0
Samba.Presentation.Services, Version=5.5.8468.18575
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=5.5.8468.18569
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=5.5.8468.18572
Stateless, Version=1.0.0.0
PropertyTools, Version=2012.4.14.1
Samba.Localization, Version=5.3.8468.18570
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 7 Professional
–CodeSet = 1252
–CSDVersion = Service Pack 1
–CurrentTimeZone = -420
–FreePhysicalMemory = 4135068
–OSArchitecture = 64-bit
–OSLanguage = 1033
–ServicePackMajorVersion = 1
–ServicePackMinorVersion = 0
–Version = 6.1.7601

Machine
-KTOWN-SYS19
–Manufacturer = Dell Inc.
–Model = OptiPlex 755
–TotalPhysicalMemory = 8453210112
–UserName = KTOWN-SYS19\SYS19


Hello @kng4536,

You can set your Tax settings according to below source;

Adding Tax on SambaPOS

Most probably your Tax Transaction Type has empty or misconfigured parts.