After recent update of your plugin I am getting error:
Headers already sent in /home/useame/public_html/wp-content/plugins/list-all-posts-by-authors-nested-categories-and-titles/include/ACT-displayer.php on line 269.
How do I fix? I have deactivated your plugin because site goes error. Thanks
https://wordpress.org/plugins/list-all-posts-by-authors-nested-categories-and-titles/