In this system, I can see a thumbnail of the image I added: https://pvoutput.org/list.jsp?id=3078&sid=2835
But in another system, this thumbnail is missing: https://pvoutput.org/list.jsp?id=3078&sid=19023
Why is this? Does it have anything to do with image links starting with ‘https’? Because according to the documentation, the link has to start with ‘http’.