Fatal error: Uncaught Error: Class "yii\base\Event" not found in /home/telefonai/public_html/test.telefonai.eu/templates/__MACOSX/vendor/enupal/stripe/src/events/CheckoutEvent.php:17 Stack trace: #0 {main} thrown in /home/telefonai/public_html/test.telefonai.eu/templates/__MACOSX/vendor/enupal/stripe/src/events/CheckoutEvent.php on line 17