Fatal error: Uncaught Error: Call to undefined function add_action() in /var/www/sweves.se/httpdocs/wp-content/plugins/html5-video-player/build/dashboard/admin.php:8 Stack trace: #0 /var/www/sweves.se/httpdocs/wp-content/plugins/html5-video-player/build/dashboard/admin.php(60): H5VPAdmin->__construct() #1 {main} thrown in /var/www/sweves.se/httpdocs/wp-content/plugins/html5-video-player/build/dashboard/admin.php on line 8