Fatal error: Uncaught Error: Interface "Prophecy\Promise\PromiseInterface" not found in /srv/www/sites/public/starter-cms/vendor/phpspec/prophecy/src/Prophecy/Promise/ReturnArgumentPromise.php:23 Stack trace: #0 {main} thrown in /srv/www/sites/public/starter-cms/vendor/phpspec/prophecy/src/Prophecy/Promise/ReturnArgumentPromise.php on line 23