Fatal error: Uncaught Error: Call to undefined function add_action() in /srv/actaojs2/lib/pkp/includes/functions.php:2 Stack trace: #0 /srv/actaojs2/lib/pkp/includes/bootstrap.php(34): require_once() #1 /srv/actaojs2/index.php(20): require_once('...') #2 {main} thrown in /srv/actaojs2/lib/pkp/includes/functions.php on line 2