Fatal error: Uncaught Error: Interface 'Magento\Framework\Event\ObserverInterface' not found in /home/esecureh/public_html/magdemo/vendor/paypal/module-braintree-core/Observer/AddPaypalShortcuts.php:16 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/vendor/paypal/module-braintree-core/Observer/AddPaypalShortcuts.php on line 16