I have a page that I`m navigating on playwright and then i have to click on a element to open a popup to get a preview of the pdf file

    [popup] = await Promise.all([
      page.waitForEvent('popup', { timeout: 20000 }),
      frame.click('#imbImprimir'),
    ]);

I tried to get a buffer but I’m getting nothing using headless: true and

await popup.emulateMedia({ media: 'print' });
        popup.emulateMedia({ media: 'print' });
        const buffer = await popup.pdf({
          format: 'A4',
          printBackground: true,
        });

Is there any other way to download this page as a pdf?

if i open the page on headless: false i can see the file and download it as a pdf clicking on the arrow file preview

Is it possible to download this file using playwright?