Fatal error: Uncaught Error: Interface 'Http\Promise\Promise' not found in /home/eberhardschwarze/public_html/vendor/php-http/client-common/src/Deferred.php:12 Stack trace: #0 {main} thrown in /home/eberhardschwarze/public_html/vendor/php-http/client-common/src/Deferred.php on line 12