Fatal error: Uncaught Error: Class 'PayPalHttp\HttpRequest' not found in /var/www/html/RIE/vendor/paypal/paypal-checkout-sdk/lib/PayPalCheckoutSdk/Payments/RefundsGetRequest.php:14 Stack trace: #0 {main} thrown in /var/www/html/RIE/vendor/paypal/paypal-checkout-sdk/lib/PayPalCheckoutSdk/Payments/RefundsGetRequest.php on line 14