DrawPage seems not to be working or Im getting it all wrong

[ywadi]

I have the code below, it generates a PDF from an HTML and then I want to embed it into a Page.
I have been able to save the html-generated pdf into a PDFdocument and save it, seems fine, when I embed it with the code below, I got no errors nor do I get anything on the page , Am I doing something wrong or is there a bug ?

        HTMLPDF.create(this.richTextHtml,richOptions).toBuffer(async function (err, buffer) {
            const sourcePdfDoc = await PDFDocument.load(buffer);
            const sourcePdfPage = sourcePdfDoc.getPages()[0]
            const embeddedPage = await pdfDocument.embedPage(sourcePdfPage);;
            page.drawPage(embeddedPage, {
                x: 250,
                y: 200,
                xScale: 0.5,
                yScale: 0.5
              })
        });