I created a map in portal showing baker act facilities in florida on a dark gray canvas, one of the standard basemaps. Then when I go to display it in a story map it's just a blank basemap. I've switched to other standard basemaps and it's been the same scenario. Anybody have any ideas?
Mary - Can you verify whether the URL you are using to reference the basemap in the web map is using HTTPS? If it's using HTTP, then it might be getting flagged as insecure content, so it won't display.