When I try to create a new post in WordPress, I get this error message (see below) at the top of page. I am unable to either save a draft or publish what I write. Frustrating! Suggestions to resolve problem needed.
object from empty value in /homepages/12/d390887873/htdocs/blog/wp-admin/includes/post.php on line 627
https://wordpress.org/plugins/wordpress-seo/