Fatal error: Uncaught Error: Interface "Magento\Store\Model\StoreSwitcherInterface" not found in /home/airtimer/public_html/vendor/magento/module-store/Model/StoreSwitcher.php:16 Stack trace: #0 {main} thrown in /home/airtimer/public_html/vendor/magento/module-store/Model/StoreSwitcher.php on line 16