Problem after export

This is present in the NuGet packages, already installed. I faced trouble after I exported.

Could not load file or assembly ‘Microsoft.ExtensionsConfiguration, Version=8.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60’. The system cannot find the file specified.

details :::
************** Exception Text **************
System.IO.FileNotFoundException: Could not load file or assembly ‘Microsoft.Extensions.Configuration, Version=8.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60’. The system cannot find the file specified.
File name: ‘Microsoft.Extensions.Configuration, Version=8.0.0.0, Culture=neutral, PublicKeyToken=adb9793829ddae60’
at VL.AppServices.AppHostBase.Scan(Assembly assembly, Boolean runUserCode)
at VL.AppServices.AppHostBase.SetScope(IEnumerable1 entryAssemblies, Boolean runUserCode) at VL.AppServices.ExportedAppHost.RunCoreAsync(Action pumpMessages) at VL.App.WindowsForms.WindowsFormsAppHost.Application_Idle(Object sender, EventArgs e) at System.Threading.Tasks.Task.<>c.<ThrowAsync>b__128_0(Object state) at System.RuntimeMethodHandle.InvokeMethod(Object target, Void** arguments, Signature sig, Boolean isConstructor) at System.Reflection.MethodBaseInvoker.InvokeDirectByRefWithFewArgs(Object obj, Span1 copyOfArgs, BindingFlags invokeAttr)

iam not familiar with these error messages; please help

Is the Microsoft.Extensions.Configuration.dll inside the directory of your exported application? If not try copying manually.