Fatal error: Uncaught Error: Call to undefined function add_action() in /home/clmepl5/public_html/web/app/plugins/gp-media-library/includes/class-gp-bootstrap.php:17 Stack trace: #0 /home/clmepl5/public_html/web/app/plugins/gp-media-library/gp-media-library.php(19): GP_Bootstrap->__construct('class-gp-media-...', '/home/clmepl5/p...') #1 {main} thrown in /home/clmepl5/public_html/web/app/plugins/gp-media-library/includes/class-gp-bootstrap.php on line 17