Fatal error: Uncaught Error: Call to undefined function path_join() in /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/eventon-dynamic-pricing/eventon-dynamic-pricing.php:72 Stack trace: #0 /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/eventon-dynamic-pricing/eventon-dynamic-pricing.php(38): eventon_dp->super_init() #1 /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/eventon-dynamic-pricing/eventon-dynamic-pricing.php(30): eventon_dp->__construct() #2 /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/eventon-dynamic-pricing/eventon-dynamic-pricing.php(127): eventon_dp::instance() #3 /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/eventon-dynamic-pricing/eventon-dynamic-pricing.php(128): EVODP() #4 {main} thrown in /users/laufgruppe-lvb/www/wordpress/wp-content/plugins/eventon-dynamic-pricing/eventon-dynamic-pricing.php on line 72