Fatal error: Uncaught Error: Interface "Prophecy\Promise\PromiseInterface" not found in C:\Servers\htdocs\inventory.fitzalan.co.uk\vendor\phpspec\prophecy\src\Prophecy\Promise\ThrowPromise.php:25 Stack trace: #0 {main} thrown in C:\Servers\htdocs\inventory.fitzalan.co.uk\vendor\phpspec\prophecy\src\Prophecy\Promise\ThrowPromise.php on line 25