Fatal error: Uncaught Error: Interface 'Prophecy\Promise\PromiseInterface' not found in C:\xampp\htdocs\admin\vendor\phpspec\prophecy\src\Prophecy\Promise\ReturnPromise.php:22 Stack trace: #0 {main} thrown in C:\xampp\htdocs\admin\vendor\phpspec\prophecy\src\Prophecy\Promise\ReturnPromise.php on line 22