there were private folder links created in 10.0.3 . now that we have upgraded to 10.0.8 , those private links cannot be removed. i have tried as the admin, as well as impersonating the user that created the private link.
There is something mentioned about up-gradation to and LDAP issue: 8.2 in here https://doc.owncloud.com/server/latest/admin_manual/release_notes.html#id1. I am sharing it to see if it is useful and helpful.
the new version is not showing up in my updater just yet, as soon as it does, i will try it out and give feedback. thanks!