Fatal error: Uncaught Error: Interface 'Magento\Framework\Api\ExtensibleDataInterface' not found in /home/esecureh/public_html/magdemo/vendor/magento/module-login-as-customer-api/Api/Data/AuthenticationDataInterface.php:18 Stack trace: #0 {main} thrown in /home/esecureh/public_html/magdemo/vendor/magento/module-login-as-customer-api/Api/Data/AuthenticationDataInterface.php on line 18