I'm getting some unusual behaviour when trying to move a page tree (parent and its children) from a regular space to a personal space (that isn't my own).
I'm getting these `$error` messages showing when I try to move the parent page, and I can't work out why this would be happening.
I know I have move permissions between the source space and the destination space because I moved items to it moments before encountering this error.
I have logged out and back in again, but the problem persists.
My Confluence version is Server 6.15.4
