F1 key throws a terminating exception in PowerShell 7.6.0-preview.2

[matteocoder]

Prerequisites

• Write a descriptive title.
• Make sure you are able to repro it on the latest released version
• Search the existing issues, especially the pinned issues.

Exception report

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Please report on GitHub: https://github.com/PowerShell/PSReadLine/issues/new?template=Bug_Report.yaml
Thank you!

### Environment
PSReadLine: 2.4.0-beta0+923a890f2e7ea10465f3a80a2bc030121a1c2f68
PowerShell: 7.6.0-preview.2
OS: Microsoft Windows 10.0.26100
BufferWidth: 120
BufferHeight: 24

Last 10 Keys:

 g e t - i t e m Spacebar F1

### Exception

System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.PowerShell.Pager, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'. The system cannot find the file specified.
File name: 'Microsoft.PowerShell.Pager, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null'
   at Microsoft.PowerShell.PSConsoleReadLine.Microsoft.PowerShell.Internal.IPSConsoleReadLineMockableMethods.RenderFullHelp(String content, String regexPatternToScrollTo)
   at Microsoft.PowerShell.PSConsoleReadLine.WriteDynamicHelpContent(String commandName, String parameterName, Boolean isFullHelp)
   at Microsoft.PowerShell.PSConsoleReadLine.DynamicHelpImpl(Boolean isFullHelp)
   at Microsoft.PowerShell.PSConsoleReadLine.ShowCommandHelp(Nullable`1 key, Object arg)
   at Microsoft.PowerShell.PSConsoleReadLine.ProcessOneKey(PSKeyInfo key, Dictionary`2 dispatchTable, Boolean ignoreIfNoAction, Object arg)
   at Microsoft.PowerShell.PSConsoleReadLine.InputLoop()
   at Microsoft.PowerShell.PSConsoleReadLine.ReadLine(Runspace runspace, EngineIntrinsics engineIntrinsics, CancellationToken cancellationToken, Nullable`1 lastRunStatus)

Screenshot

Environment data

PS Version: 7.6.0-preview.2
PS HostName: ConsoleHost (Windows Terminal)
PSReadLine Version: 2.4.0-beta0
PSReadLine EditMode: Windows
OS: 10.0.26100.1 (WinBuild.160101.0800)
BufferWidth: 120
BufferHeight: 24

Steps to reproduce

1. Open a new PowerShell session
2. Write the name a command (for example Get-Item)
3. Press F1

Expected behavior

The pager containing the command's documentation should appear.

Actual behavior

A terminating exception is thrown. Coincidentally, when trying to create a new [Microsoft.PowerShell.Pager] instance, PowerShell throws an InvalidOperation: Unable to find type [microsoft.powershell.pager]. error.

[daxian-dbw]

@matteocoder I cannot reproduce the issue with v7.6.0-preview.2 PowerShell + v2.4.0-beta0 PSReadLine module.

The v2.4.0-beta0 PSReadLine module has the file Microsoft.PowerShell.Pager.dll shipped in the module.
Any chance that you accidentally deleted the Microsoft.PowerShell.Pager.dll file from the module folder?

[matteocoder]

@daxian-dbw Thank you for your reply. Indeed I the Pager dll was absent from the module's directory, and a reinstallation solved the issue.