Fatal error: Uncaught Error: Call to undefined function add_action() in /srv/www/cntait.org/www/site.tree/public/wp-content/plugins/jetpack/modules/markdown/easy-markdown.php:891 Stack trace: #0 {main} thrown in /srv/www/cntait.org/www/site.tree/public/wp-content/plugins/jetpack/modules/markdown/easy-markdown.php on line 891