i have powershell script of PNP for setting list item value using for loop.
$ListItems_Values=(Get-PnPListItem -List fretag%20vrigt -Fields "FileLeafRef").FieldValues
foreach ($item in $ListItems_Values){ if($item.FileLeafRef -match "Ö") { $item.FileLeafRef=$item.FileLeafRef -replace "Ö","O"
Set-PnPListItem -List fretag%20vrigt -Identity $item.FileLeafRef -Values @{"FileLeafRef" = $item.FileLeafRef} -SystemUpdate:$True
Write-Host $item.FileLeafRef "O is replace" }
else{Write-Host $item.FileLeafRef "O is missing"} }
it fetching value of FileLeafReaf column but when i set using set_pnplist item it throws below error