Fatal error: Uncaught Error: Interface "Http\Promise\Promise" not found in /home/slsiluser/public_html/service-portal/vendor/symfony/http-client/Response/HttplugPromise.php:24 Stack trace: #0 {main} thrown in /home/slsiluser/public_html/service-portal/vendor/symfony/http-client/Response/HttplugPromise.php on line 24