Fatal error: Uncaught Error: Call to undefined function add_action() in /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/eventON_ALT/includes/class-map-styles.php:11 Stack trace: #0 /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/eventON_ALT/includes/class-map-styles.php(70): evo_map_styles->__construct() #1 {main} thrown in /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/eventON_ALT/includes/class-map-styles.php on line 11