Unable to start/stop workflow instances associated with a List Item

Hi All,

I'm trying to stop workflow instances attached to a specific List Item In a SharePoint List. But I notice the workflow subscription command always returns null, due to which Stop-PnPWorkflowInstance fails.

#Install-Module -Name Microsoft.PowerApps.PowerShell -AllowClobber

#Install-Module -Name Microsoft.PowerApps.Administration.PowerShell

#connect with PROD Azure environment

#Connect-AzureAD -TenantId

#Add-PowerAppsAccount

$environments = Get-FlowEnvironment #This is to get all available Environment in our Power Automte Tenant

foreach($environ in $environments.EnvironmentName) #Cycle to all Environments

{

$flows = Get-Flow –EnvironmentName $environ 

foreach ($flow in $flows) #Loop to each PowerAutomate workflow Available

{

    if($flow.DisplayName -eq "wfName")

    {  

        $WFSubscription = Get-PnPWorkflowSubscription -List "List title" -Name "wfName"

        $WFSubscriptionName = $WFSubscription.Name

        Stop-PnPWorkflowInstance -ListItem 9701 -Subscription $WFSubscription

}

}
```}

Please let me know what is incorrect here?