Qr code does not fill

hello guys,
I have generated a Qr code in Lightburn, but when I send it to a fill layer, it still remains as line vector. Any idea of what I am doing wrong? thanks

Does it show as filled if you ‘preview’ it ?
If it is does it means that you will need to select either filled/smooth or filled/course from the ‘Window’ dropdown to see it on the work screen

I didn’t show as filled in the preview menu. Hoverever, with filled coarse, t worked. Thank you!