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Fatal error: require_once(): Failed opening required '/wp-includes/class-wpdb.php' (include_path='.:/:/usr/local/php73/lib/pear') in /wp-includes/wp-db.php on line 17

Fatal error: Uncaught Error: Call to undefined function wp_is_maintenance_mode() in /wp-includes/class-wp-fatal-error-handler.php:35 Stack trace: #0 [internal function]: WP_Fatal_Error_Handler->handle() #1 {main} thrown in /wp-includes/class-wp-fatal-error-handler.php on line 35