Fatal error: Uncaught Error: Class "GuzzleHttp\Promise\RejectionException" not found in /home/mdws/public_html/staging/paypal/vendor/guzzlehttp/promises/src/AggregateException.php:8 Stack trace: #0 {main} thrown in /home/mdws/public_html/staging/paypal/vendor/guzzlehttp/promises/src/AggregateException.php on line 8