Hi Raymond and colleagues,
I now believe the issue reported in ticket "Couldn't delete empty album backend" (now locked) was caused by the absence of file extension .jpeg which is the same file format as .jpg
Both extension need to be included as factory default settings. If not then, .jpeg needs to be added manually.
You see, there's a misunderstanding that .jpeg is an old extension and not used anymore. Apple Mac, iPads, iPhones, image banks such as Adobe, Kodak, 123rf.com just to name a few, all us .jpeg today.
Anyway, I'll need to include .jpeg together with .jpg as this will probably resolve the issue we're having.
Please refer to ticket about how to include .jpeg in stream > comments
Cheers!