Fatal error: Uncaught Error: Undefined constant "media_url" in /home/hsgsemin/system/v42/config.php:5 Stack trace: #0 /home/hsgsemin/system/v42/php/bestellung/4-paypal/paypal.php(18): require() #1 /home/hsgsemin/system/paypal.php(16): require_once('/home/hsgsemin/...') #2 /home/hsgsemin/public_html/sites/paypal/index.php(8): require_once('/home/hsgsemin/...') #3 {main} thrown in /home/hsgsemin/system/v42/config.php on line 5