Want to delete remote files before download via powershell

$sessionOptions = New-Object WinSCP.SessionOptions
    $sessionOptions.Protocol = [WinSCP.Protocol]::$protocol
    $sessionOptions.HostName = $hostname
    $sessionOptions.UserName = $username
    $sessionOptions.Password = $password
    #$sessionOptions.SshHostKeyFingerprint = "ssh-rsa 2048 9a:33:4f:9c:2b:5a:ad:ad:6b:f4:67:9f:11:51:d6:ab"
 
    $session = New-Object WinSCP.Session
    try
    {
        
        # Will continuously report progress of synchronization
        $session.add_FileTransferred( { FileTransferred } )
 
        # Connect
        $session.Open($sessionOptions)
        $session.RemoveFiles("/test/*")

{WinSCP.SessionRemoteException: Can't get attributes of file

$sessionOptions.SessionLogPath = ...