Export-vApp PowerShell Error

Hi folks,

I am reasonably new to PowerShell - PowerCLI and attepting to export a VM from ESXi to OVA format.  All of the required CLI syntax works with exception of "Export-VApp"; I get the following error below and looking for a resolution please.

Export-vApp PowerShell Error

Export-vApp : 13/05/2020 9:24:38 AM     Export-VApp             Current license or ESXi version prohibits execution of the requested operation.

At line:1 char:51

+ ... iance_v1200_dhcp_1" | Export-vApp -Destination "C:\Utils" -Format OVA

+                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

    + CategoryInfo          : NotSpecified: (:) [Export-VApp], RestrictedVersion

    + FullyQualifiedErrorId : Client20_VappServiceImpl_ExportVApp_Error,VMware.VimAutomation.ViCore.Cmdlets.Commands.ExportVApp

My ESXi Environment:

Client version: 1.33.4

Client build number: 14093553

ESXi version:6.7.0

ESXi build number: 14320388

Thank you!