I have an existing wp post which used to be published the forum as well.
At some point every time I update the post by clicking the
save link, I get an email with following error message:
Discourse Publishing Failure A post has failed to publish on Discourse from your site ... ... Reason for failure: A bad response was returned from Discourse. Embed url wird bereits verwendet (translates to "is being used already")
I unlinked the post from discourse. Also I deleted the post in the forum. Yet the error keeps popping up with every save of the post. Also when trying to publish post as new topic, the same error comes up.