Fatal error: Uncaught Error: Call to undefined function add_action() in /home/lookoutmv/public_html/wp-content/plugins/jupiterx-core/includes/customizer/settings/404/popup.php:10 Stack trace: #0 {main} thrown in /home/lookoutmv/public_html/wp-content/plugins/jupiterx-core/includes/customizer/settings/404/popup.php on line 10