Fatal error: Uncaught Error: Call to undefined function path_join() in /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/eventon-action-user/eventon-action-user.php:55 Stack trace: #0 /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/eventon-action-user/eventon-action-user.php(33): eventon_au->super_init() #1 /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/eventon-action-user/eventon-action-user.php(26): eventon_au->__construct() #2 /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/eventon-action-user/eventon-action-user.php(142): eventon_au::instance() #3 /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/eventon-action-user/eventon-action-user.php(145): EVOAU() #4 {main} thrown in /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/eventon-action-user/eventon-action-user.php on line 55