Fatal error: Uncaught Error: Class 'Text_Diff_Renderer' not found in /home/oho09/public_html/lekcjatestdm/wp-includes/class-wp-text-diff-renderer-table.php:17 Stack trace: #0 {main} thrown in /home/oho09/public_html/lekcjatestdm/wp-includes/class-wp-text-diff-renderer-table.php on line 17