Fatal error: Uncaught Error: Class 'oxUBase' not found in /www/shop/vendor/oxid-professional-services/paypalplus-module/controllers/payppaypalpluswebhook.php:27 Stack trace: #0 {main} thrown in /www/shop/vendor/oxid-professional-services/paypalplus-module/controllers/payppaypalpluswebhook.php on line 27