Fatal error: Uncaught Error: Interface 'PayPalHttp\Injector' not found in /var/www/html/RIE/vendor/paypal/paypal-checkout-sdk/lib/PayPalCheckoutSdk/Core/GzipInjector.php:8 Stack trace: #0 {main} thrown in /var/www/html/RIE/vendor/paypal/paypal-checkout-sdk/lib/PayPalCheckoutSdk/Core/GzipInjector.php on line 8