Fatal error: Uncaught Error: Interface "Prophecy\Promise\PromiseInterface" not found in I:\www\frameworks\Laravel\vendor\phpspec\prophecy\src\Prophecy\Promise\CallbackPromise.php:24 Stack trace: #0 {main} thrown in I:\www\frameworks\Laravel\vendor\phpspec\prophecy\src\Prophecy\Promise\CallbackPromise.php on line 24