I've had a spcific FutureQuest site for nearly 20 years, related to an annual benefit concert:
http://singtocurems.org.
This year I added a new image to my sponsors folder:
http://singtocurems.org/images/sponsor-ad/
and tried to add it to the appropriate page:
http://singtocurems.org/2021/sponsors.shtml
...but the image didn't appear.
Then I checked the other sponsors.shtml pages:
http://singtocurems.org/sponsors.txt
- and none of the images from that folder are visible!
What's going on?