Fatal error: Uncaught Error: Class "Text_Diff_Renderer" not found in D:\XAMPP\htdocs\UTeM\penerbit\wp-includes\class-wp-text-diff-renderer-table.php:17 Stack trace: #0 {main} thrown in D:\XAMPP\htdocs\UTeM\penerbit\wp-includes\class-wp-text-diff-renderer-table.php on line 17