Hardware version 14 will not run Get-VIEvent

Hi

I'm running Vcenter 6.7 and I'm running some powerCLI version 11.2.0.12780525 on powershell 5.1.

When I run

Get-VIEvent -Entity Servername

it works if the server has a hardware version of 10 but if it has a version of 14 I get.

Get-VIEvent : 17/04/2019 15:13:20       Get-VIEvent             Exception has been thrown by the target of an invocation.

At line:1 char:1

+ Get-VIEvent -Entity gold_1

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

    + CategoryInfo          : NotSpecified: (:) [Get-VIEvent], VimException

    + FullyQualifiedErrorId : Core_BaseCmdlet_UnknownError,VMware.VimAutomation.ViCore.Cmdlets.Commands.GetEvent

Any Ideas?

Alex