Error using Variables Option

Hello,

I receive the following error when I click the "Variables" option under Powershell Pro Tools:

Exception running command: System.InvalidOperationException: Sequence contains no matching element
   at System.Linq.Enumerable.First[TSource](IEnumerable`1 source, Func`2 predicate)
   at PowerShellToolsPro.Cmdlets.GetVariables.Execute(String input, Runspace runspace)
   at PowerShellToolsPro.Cmdlets.VSCodeHelpers.StartServer(String psScriptRoot)
Output is not null. Writing output (378 bytes).