I did some more searching on this today, and haven't been able to come up with anything new, except to ask if, when you get this error, can you actually get Get https://x.x.x.x:8776/v2/<UUID>/volumes/detail using curl (or something) without an error?
The Openstack env I was using was Havana.
I did some more searching on this today, and haven't been able to come up with anything new, except to ask if, when you get this error, can you actually get Get https:/ /x.x.x. x:8776/ v2/<UUID>/ volumes/ detail using curl (or something) without an error?