Fatal error: Uncaught Error: Interface "Magento\ConfigurableProduct\Model\AttributesListInterface" not found in /home/airtimer/public_html/vendor/magento/module-configurable-product/Model/AttributesList.php:8 Stack trace: #0 {main} thrown in /home/airtimer/public_html/vendor/magento/module-configurable-product/Model/AttributesList.php on line 8