PdfFilterClose.cs

public override void Close()
{
    var converter = new PdfConverter
    {
        MediaType = "print",
    };
    converter.PdfDocumentOptions.LiveUrlsEnabled = false;

    _memStream.Position = 0;

    converter.SavePdfFromHtmlStreamToStream(_memStream, Encoding.UTF8, _baseUrl, _oldFilter);

    _oldFilter.Close();
}