Fatal error: Uncaught Error: Class 'WP_REST_Edit_Site_Export_Controller' not found in /home10/amoutsei/public_html/wp-content/plugins/gutenberg/lib/class-wp-rest-edit-site-export-controller-gutenberg.php:18 Stack trace: #0 {main} thrown in /home10/amoutsei/public_html/wp-content/plugins/gutenberg/lib/class-wp-rest-edit-site-export-controller-gutenberg.php on line 18