Fatal error: Uncaught Error: Class "WP_Importer" not found in /var/www/andovercg/beta/wp-content/plugins/wordpress-importer/class-wp-import.php:15 Stack trace: #0 {main} thrown in /var/www/andovercg/beta/wp-content/plugins/wordpress-importer/class-wp-import.php on line 15