Fatal error: Uncaught Error: Interface "Http\Promise\Promise" not found in /home/julienke/www/sites/ftx/vendor/php-http/curl-client/src/CurlPromise.php:20 Stack trace: #0 {main} thrown in /home/julienke/www/sites/ftx/vendor/php-http/curl-client/src/CurlPromise.php on line 20