I can’t change the thread to private, you wouldn’t be able to see it (wordpress only lets editor and admins to see private posts).
If you want to post sensitive information, upload it in a .txt file, that is only visible to me and you.
I still cannot see any of these errors on the page. The second one seems to be different. Is that visible on a specific action, like post editing or publishing or something else?Best,
If you like my products, don't forget to rate them on codecanyon :)