I found the solution to be based on NOT CHOOSING custom size for the image you are working on. I had an SVG that was not loading because it had /elementor/thumb/ in the url. Once I tried “Large” instead of “Custom” the issue resolved itself. This appears to me to be a bug in Elementor. I feel like that URL is actually used by the GUI during admin but is somehow being written into the live site. It will show correctly in the builder initially but if you wait for an autosave, it will error out as well.
I tried all of the items in this thread before discovering that the size fixed it.
I’m sorry, I did not get a notice on the first posting. I’m still looking for a solution. Is there a way to privately share that report? I’d rather not have all of that data in a public environment.