Hello! I am creating a web app using Web AppBuilder which has a map with pictures attached to it. I converted the pictures to their thumbnail format ( 100x100, size 5.4 kb) from makethumbnails.com. I downloaded them and inserted the thumbnail url (with jpg extension) in the attribute table of the shapefiles and I have done the necessary configuration of the pop-up. But the thumbnail is not shown in the pop-up, instead a small icon is appearing, which looks like this:
I am not sure why this is happening. Can anyone please help me on this matter?