Fatal error: Uncaught Error: Interface 'UsingInterfaces\ProductInterface' not found in /var/www/productscrm.egodev1.info/data/www/productscrm.egodev1.info/releases/126/vendor/zircote/swagger-php/Examples/using-interfaces/Product.php:8 Stack trace: #0 {main} thrown in /var/www/productscrm.egodev1.info/data/www/productscrm.egodev1.info/releases/126/vendor/zircote/swagger-php/Examples/using-interfaces/Product.php on line 8