QR code not showing in pdf file

Hi.

You'll want to take a look at the way in which your PDF generator is seeking to access the QR code image. It will either be via a file path or a URL. If a URL, perhaps the PDF generator can't resolve the hostname or can't access the URL. If via a file path, configuration such as using a chroot jail or using a relative path and an unanticipated current directory can cause issues like this.

If you can, I'd recommend using the Puphpeteer submodule - you can just point it at a URL and the PDF it generates is exactly what Chrome sees, so things should be more straight forward.

Regards,

Nij