Comment 11 for bug 1657916

I could imagine that you're missing a filter/prefix on the B2 call (without having checked the source at all). The B2 api call for listing files is this:

https://www.backblaze.com/b2/docs/b2_list_file_names.html

On it, it seems that with the correct combination of delimiter and prefix, you can list just the contents of a specific folder.

This part is relevant: "With a prefix of "photos/", and a delimiter of "/", you would get:"