Using Powershell, get reason why an operation failed

I need to check the operation status of workflow runs using Powershell. I can use Get-QARSWorkflowInstance to determine the overall run operation status for instance:

$Ops = Get-QARSWorkflowInstance -CretatedOn Today -Workflow $wfDn

$Ops.Operation

The above will list all the workflow runs and their operation status (Completed/Failed/Running) but if it failed I need to know the reason why like it shows in the console

Also tried using Get-QARSOperation -OperationID $Ops.ID but again it shows the Status but no reason if it failed