Powershell Export-CSV -Append mit Fehler

$item.FullName,$sizeOfFolder | Export-Csv $csvPath -NoTypeInformation -Append

Export-Csv : Es wurde kein Parameter gefunden, der dem Parameternamen "Append" entspricht.
Bei C:\Users\[Benutzer]\Desktop\Collect_FolderSize_Job.ps1:32 Zeichen:99
+           $item.FullName,$sizeOfFolder | Export-Csv $csvPath -NoTypeInformation -NoClobber -Append <<<< 
    + CategoryInfo          : InvalidArgument: (:) [Export-Csv], ParameterBindingException
    + FullyQualifiedErrorId : NamedParameterNotFound,Microsoft.PowerShell.Commands.ExportCsvCommand

$Array | Export-Csv -append -path $csvPath

function Select-Folder($message='Select a folder', $path = 0) { 
    $object = New-Object -comObject Shell.Application  
     
    $folder = $object.BrowseForFolder(0, $message, 0, $path) 
    if ($folder -ne $null) { 
        return $folder.self.Path
    } 
} 

function totalSizeFormated{
    $GroesseGB = "{0:N2}" -f ($Groesse/1GB)
    $GroesseMB = "{0:N2}" -f ($Groesse/1MB)
    echo "$GroesseGB GB"
    echo "$GroesseMB MB"
}

function sizeOfFoldercontent($folderToMeasure) {
    return (Get-ChildItem $folderToMeasure.FullName -Recurse | Measure-Object -Property length -Sum).Sum
}#| Export-Csv $csvPath

function sizeOfFolder($directoriesToMeasure) {
    $sizeOfFolder = 0
    $Array = @()
    foreach ($item in $directoriesToMeasure){
          $sizeOfFolder =((Get-ChildItem $item.FullName -Recurse | Measure-Object -Property length -Sum).Sum/1GB)
          $sizeOfFolderInText =("{0:N2}" -f ((Get-ChildItem $item.FullName -Recurse | Measure-Object -Property length -Sum).Sum/1GB))+" GB"
          # if the item is a directory, then process it.
          #echo "$item " (sizeOfFoldercontent $item)

          if ($item.Attributes -eq "Directory"){
                echo "Groesse von $item : "($sizeOfFolderInText)
                $Array += ("$item,$sizeOfFolderInText")
          }
          
    }
    $Array | Export-Csv -path $csvPath -NoTypeInformation
    
}


function sizeOfEachFolderRecursive($directoriesToMeasure) {
    #echo $directoriesToMeasure
    $sizeOfFolder = 0
    foreach ($item in $directoriesToMeasure){
        
          # if the item is a directory, then process it.
          echo "Foreach"
          echo sizeOfFoldercontent $item

          if ($item.Attributes -eq "Directory"){
                echo "IF reached"
                $childs=Get-ChildItem $item.FullName -Recurse | where {$_.Attributes -eq "Directory"}
                $sizeOfFolder = $sizeOfFolder + (sizeOfFoldercontent($item))
          }
    }
    #$sizeOfFolder | Export-Csv -Append $csvPath 
}

echo "Start"

chcp 1252

$csvPath = "C:\temp\export.csv"
$pathAsString = Select-Folder
# $pathAsString = Select-Folder

$directory = Get-Item $pathAsString
$tableOfContent = Get-ChildItem $directory.FullName -Recurse | where {$_.Attributes -eq "Directory"}
sizeOfFolder (Get-ChildItem $directory.FullName | where {$_.Attributes -eq "Directory"})


$Groesse = (Get-ChildItem $directory.FullName -Recurse | Measure-Object -Property length -Sum).Sum

echo "Total size of $pathAsString"
totalSizeFormated

echo "End"

$Array | Select-Object ToString | Export-Csv -force -path $csvPath -NoTypeInformation