On THIS page, which is part of a WordPress based website, I have a collection of mp3 files, each with a Facebook share button. Shearing the page works only if prior to clicking the button, I have already logged in.
Otherwise, if I first click the button and then (after being asked to) I log in, the URL to share is badly formatted and the posts picture does not apear:
Why is that? Any hints on how to fix the problem?
Read more here: Facebook share improper URL format