Fatal error: Uncaught Error: Interface "BBNT\StockChecker\Api\Data\SkuInterface" not found in /var/www/magento/html/app/code/BBNT/StockChecker/Model/Data/Sku.php:13 Stack trace: #0 {main} thrown in /var/www/magento/html/app/code/BBNT/StockChecker/Model/Data/Sku.php on line 13