Fatal error: Uncaught Error: Class 'WP_REST_Search_Handler' not found in E:\www\web\wp-includes\rest-api\search\class-wp-rest-post-search-handler.php:17
Stack trace:
#0 {main}
thrown in E:\www\web\wp-includes\rest-api\search\class-wp-rest-post-search-handler.php on line 17