Import-LiveTilesConfiguration fails at Invoke-RestMethod line 90

[Dominik-KV]

Updating LiveTiles intranet config ...
Invoke-RestMethod : Der Remoteserver hat einen Fehler zurückgegeben: (404) Nicht gefunden.
In C:\Users\xxx\OneDrive - xxx\Desktop\LiveTiles Installation\DemoEnvironment-main\DemoImport\Import-LiveTilesConfiguration.ps1:90 Zeichen:15
+ ...    $result = Invoke-RestMethod –Uri $url -Method Get -Headers $header
+                  ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-RestMethod], WebException
    + FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeRestMethodCommand
 
Invoke-RestMethod : Der Remoteserver hat einen Fehler zurückgegeben: (500) Interner Serverfehler.
In C:\Users\xxx\OneDrive - xxx\Desktop\LiveTiles Installation\DemoEnvironment-main\DemoImport\Import-LiveTilesConfiguration.ps1:149 Zeichen:15
+ ...   $result = Invoke-RestMethod –Uri $url -Method Post -Headers $header ...
+                 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    + CategoryInfo          : InvalidOperation: (System.Net.HttpWebRequest:HttpWebRequest) [Invoke-RestMethod], WebException
    + FullyQualifiedErrorId : WebCmdletWebResponseException,Microsoft.PowerShell.Commands.InvokeRestMethodCommand