Fatal error: Uncaught Error: Interface "OpenApi\Examples\Specs\UsingInterfaces\Spec\ProductInterface" not found in /home/mohamed/education.mohamed-emad.com/vendor/zircote/swagger-php/docs/examples/specs/using-interfaces/spec/Product.php:12 Stack trace: #0 {main} thrown in /home/mohamed/education.mohamed-emad.com/vendor/zircote/swagger-php/docs/examples/specs/using-interfaces/spec/Product.php on line 12