Fatal error: Uncaught Error: Call to undefined function add_action() in /www/web_ecpol_php81/wp-content/plugins/enable-media-replace/classes/external/upsell_installer.php:3 Stack trace: #0 {main} thrown in /www/web_ecpol_php81/wp-content/plugins/enable-media-replace/classes/external/upsell_installer.php on line 3