Fatal error: Uncaught Error: Call to undefined function add_action() in /home/workings/public_html/hidden/wp-content/plugins/fusion-core/shortcodes/class-blog.php:21 Stack trace: #0 /home/workings/public_html/hidden/wp-content/plugins/fusion-core/shortcodes/class-blog.php(886): FusionSC_Blog->__construct() #1 {main} thrown in /home/workings/public_html/hidden/wp-content/plugins/fusion-core/shortcodes/class-blog.php on line 21