Fatal error: Uncaught Error: Call to undefined function add_action() in /var/www/html/wp-content/plugins/elementskit/activator.php:33 Stack trace: #0 /var/www/html/wp-content/plugins/elementskit/activator.php(18): elementskit_activator->define_hooks() #1 /var/www/html/wp-content/plugins/elementskit/activator.php(10): elementskit_activator->__construct() #2 /var/www/html/wp-content/plugins/elementskit/activator.php(65): elementskit_activator::get_instance() #3 {main} thrown in /var/www/html/wp-content/plugins/elementskit/activator.php on line 33