Prerequisites

• Write a descriptive title.
• Make sure you are able to repro it on the latest released version
• Search the existing issues.
• Refer to the FAQ.
• Refer to Differences between Windows PowerShell 5.1 and PowerShell.

Steps to reproduce

I develop an UI app with dotnet sdk 8.0.100-preview.5.23303.2
I am using the workaround for this SDK because there is a problem with MMI :

<RuntimeHostConfigurationOption Include="System.Runtime.Loader.UseRidGraph" Value="true" />

But when I migrate from PowerShell 7.4.0-preview.3 to 7.4.0-preview.4, I am experiencing a NullReference exception with the API System.Management.Automation.CommandCompletion.CompleteInput

var completion = CommandCompletion.CompleteInput(text, caretOffset, new Hashtable());

Expected behavior

It works.

Actual behavior

It failed.

Error details

System.NullReferenceException: 'Object reference not set to an instance of an object.'
   at System.Management.Automation.CommandCompletion.CompleteInputImpl(Ast ast, Token[] tokens, IScriptPosition positionOfCursor, Hashtable options)
   at System.Management.Automation.CommandCompletion.CompleteInput(String input, Int32 cursorIndex, Hashtable options)

Environment data

Name                           Value
----                           -----
PSVersion                      7.4.0-preview.4
PSEdition                      Core
GitCommitId                    7.4.0-preview.4
OS                             Microsoft Windows 10.0.22621
Platform                       Win32NT
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0…}
PSRemotingProtocolVersion      2.3
SerializationVersion           1.1.0.1
WSManStackVersion              3.0

Visuals

No response