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### Environment
PSReadLine: 2.3.6+d2e770f93b7a53d8660a6402eb29d1ae1c35e767
PowerShell: 7.5.2
OS: Microsoft Windows 10.0.26100
BufferWidth: 120
BufferHeight: 26

Last 63 Keys:

 l s Spacebar - p a Tab Alt+h q Ctrl+c U P d a t e Backspace Backspace Backspace Backspace Backspace p d a t e - H e l Tab Spacebar - Y Backspace U i Tab Spacebar E Backspace e n - U S Enter
 c p p Spacebar Backspace Backspace Backspace Backspace l s Spacebar - p a Tab Alt+h

### Exception

Microsoft.CSharp.RuntimeBinder.RuntimeBinderException: Cannot perform runtime binding on a null reference
   at CallSite.Target(Closure, CallSite, Object)
   at System.Dynamic.UpdateDelegates.UpdateAndExecute1[T0,TRet](CallSite site, T0 arg0)
   at Microsoft.PowerShell.PSConsoleReadLine.WriteParameterHelp(Object helpContent)
   at Microsoft.PowerShell.PSConsoleReadLine.WriteDynamicHelpContent(String commandName, String parameterName, Boolean isFullHelp)
   at Microsoft.PowerShell.PSConsoleReadLine.DynamicHelpImpl(Boolean isFullHelp)
   at Microsoft.PowerShell.PSConsoleReadLine.ShowParameterHelp(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)

PS Version: 7.5.2
PS HostName: ConsoleHost (Windows Terminal)
PSReadLine Version: 2.3.6
PSReadLine EditMode: Windows
OS: 10.0.26100.2308 (WinBuild.160101.0800)
BufferWidth: 156
BufferHeight: 36