Copy folder and subfolder structure between SharePoint Document Libraries

[eLAMENTED]

I have been trying to build a powershell runbook that captures the source document library's folder structure and cloning it to a target sites document library using PnP PowerShell. Below is the script;
`#Azure Cert
$password = Get-AutomationVariable -Name 'PnP-module-cert-pwd'
$secPassword = $password | ConvertTo-SecureString -AsPlainText -Force
$cert = Get-AutomationCertificate -Name 'SharePoint PnP PowerShell Connection.pfx'
$pfxCert = $cert.Export("pfx", $password)
$certPath = "$env:TEMP\SharePointPnPConnection.pfx"
Set-Content -Value $pfxCert -Path $certPath -Force -AsByteStream

Import PnP PowerShell Module

Import-Module PnP.PowerShell

Variables

$sourceSiteUrl = "https://XXXXX.sharepoint.com/sites/DKDevelopmentTestSite"
$targetSiteUrl = "https://XXXXX.sharepoint.com/sites/DKDevelopmentTestSiteTARGET"
$sourceLibraryName = "Shared%20Documents/"
$targetLibraryName = "Shared%20Documents/"

Connect to the source site Credentail from Cert

Connect-PnPOnline -Url $sourceSiteUrl -ClientId 'b372a83b-XXXX-XXXX-92d4-573e73070227' -Tenant '4f5a8277-XXXX-XXXX-b65a-8836c5784d0c' -CertificatePath $certPath -CertificatePassword $secPassword
Write-Output "Connected to source site: $sourceSiteUrl/$sourceLibraryName"

Get all folders and subfolders in the source document library

$sourceFolders = Get-PnPFolderItem -FolderSiteRelativeUrl $sourceLibraryName -ItemType Folder
Write-Output "Source folders - $sourceForlders"

Connect to the target site

Connect-PnPOnline -Url $targetSiteUrl -ClientId 'b372a83b-3514-XXXX-XXXX-573e73070227' -Tenant '4f5a8277-XXXX-XXXX-b65a-8836c5784d0c' -CertificatePath $certPath -CertificatePassword $secPassword
Write-Output "Connected to target site: $targetSiteUrl/$targetLibraryName"

Loop through each folder and replicate the structure

Write-Output "Looping through each folder and replicate the structure"
foreach ($folder in $sourceFolders) {
# Skip the root folder
Write-Output "Skipping root folder"
if ($folder.ServerRelativeUrl -eq "/sites/DevelopmentTestSite/$sourceLibraryName") {
continue
}
$relativeFolderPath = $folder.ServerRelativeUrl.Replace("/sites/DevelopmentTestSite/$sourceLibraryName", "")
$parentPath = if ($relativeFolderPath -ne "") { "$targetLibraryName$relativeFolderPath" }
else { $targetLibraryName }
# Create folder in target library
Add-PnPFolder -Name $folder.Name -Folder $parentPath
Write-Host "$parentPath/$folder.Name created"
}
Disconnect-PnPOnline`

The connection reg seems to work fine, it doesn't seem to find any of the folders or add them to target library. yet no error is produced.

Anyone have any idea on where I may be going wrong? I can't for the life f me get this working.
I aprpeciate any help I can get.
Cheers! D