I generate unique QR Codes for an e-ticket and check in process for the events business by combining an external QR Genterater URL with contact field data. At the moment I can only send the unique QR Code via the body of an email (which is fine)

I have tried to use the QR Code image url on to PDFs, to create a unique PDF ticket via workflows, but the QR Code image is just blank. See image.

Is there way of the URL image coming through on the PDF?