问图像和默认背景色在.net Core5的SelectPdf中不呈现

EN

    [HttpGet()]
    public IActionResult GetDocket()
    {
        HtmlToPdf htmlToPdf = new HtmlToPdf();
        htmlToPdf.Options.PdfPageOrientation = PdfPageOrientation.Portrait;
        htmlToPdf.Options.PdfPageSize = PdfPageSize.A4;
        htmlToPdf.Options.CssMediaType = HtmlToPdfCssMediaType.Print;
        htmlToPdf.Options.InternalLinksEnabled = true;
        htmlToPdf.Options.ExternalLinksEnabled = true;

        string html = "";
        html += "<div style='background-colour:#edf3f3'>";
        html += "<img src='/images/logo.svg' alt='BaseURLHomeLogo'";
        html += "</div>";

        PdfDocument pdfDocument = htmlToPdf.ConvertHtmlString(html, "https://xyz.home.com");
        byte[] pdf = pdfDocument.Save();
        return new FileContentResult(pdf, "application/octet-stream")
        {
            FileDownloadName = "Print.pdf"
        };
    }