Fatal error: Uncaught Error: Interface "Http\Promise\Promise" not found in /home/mdws/public_html/staging/paypal/vendor/php-http/promise/src/RejectedPromise.php:10 Stack trace: #0 {main} thrown in /home/mdws/public_html/staging/paypal/vendor/php-http/promise/src/RejectedPromise.php on line 10