Using pluggable widget generator yo @mendix/widget WidgetName is giving an error

I am trying to create a custom widget  by following the steps provided here  – However, yo @mendix/widget WidgetName is giving me following error Error: Command failed: powershell (Get-CimInstance -ClassName Win32_OperatingSys tem).caption 'powershell' is not recognized as an internal or external command, operable program or batch file.   Modeller version – 8.14
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