Fatal error: Uncaught Error: Call to undefined function path_join() in /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/eventon-qrcode/eventon-qrcode.php:64 Stack trace: #0 /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/eventon-qrcode/eventon-qrcode.php(37): EventON_qr->super_init() #1 /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/eventon-qrcode/eventon-qrcode.php(111): EventON_qr->__construct() #2 {main} thrown in /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/eventon-qrcode/eventon-qrcode.php on line 64