Fatal error: Uncaught Error: Interface 'Prophecy\Promise\PromiseInterface' not found in D:\svn\bitfx\vendor\phpspec\prophecy\src\Prophecy\Promise\ReturnArgumentPromise.php:23 Stack trace: #0 {main} thrown in D:\svn\bitfx\vendor\phpspec\prophecy\src\Prophecy\Promise\ReturnArgumentPromise.php on line 23