Using the following cmdlet "New-PnPSite" to create new SharePoint Sites

[WorkMatze]

Hello guys,

I'm currently using the PNP Cmdlet "New-PnPsite" and I want to automize it. Therefore I need to use variables with the cmdlet, but everytime I use a variable within the -Url Parameter I get an error message:

New-PnPSite : The property or field 'Url' has not been initialized. It has not been requested or the request has not been executed. It may need to be explicitly requested

My code looks the following:

$AdminURL = "https://{tenant}-admin.sharepoint.com"
$SiteTitle= "Test1238"
$SiteUrl= "https://{tenant}.sharepoint.com/sites/Test1238"
Connect-PnPOnline -Url $AdminURL -Interactive

New-PnPSite -Type TeamSiteWithoutMicrosoft365Group -Title $SiteTitle -Owner $SiteOwner -Lcid 1033 -Url $SiteUrl

I use the the PowerShell parameters:

Name                           Value                                                                                                                   
----                           -----                                                                                                                   
PSVersion                      5.1.22621.963                                                                                                           
PSEdition                      Desktop                                                                                                                 
PSCompatibleVersions           {1.0, 2.0, 3.0, 4.0...}                                                                                                 
BuildVersion                   10.0.22621.963                                                                                                          
CLRVersion                     4.0.30319.42000                                                                                                         
WSManStackVersion              3.0                                                                                                                     
PSRemotingProtocolVersion      2.3                                                                                                                     
SerializationVersion           1.1.0.1  

When I use a normal string -Url "{tenant}.sharepoint.com/sites/title" then it's working. What can I do?

Best regards

Matthias