Fatal error: Uncaught Error: Interface "Magento\Checkout\Model\ConfigProviderInterface" not found in /home/airtimer/public_html/vendor/magento/module-persistent/Model/CheckoutConfigProvider.php:11 Stack trace: #0 {main} thrown in /home/airtimer/public_html/vendor/magento/module-persistent/Model/CheckoutConfigProvider.php on line 11