Fatal error: Uncaught Error: Call to undefined function language_attributes() in /home/cezarypiatek1990/public_html/testwordpressa/wp-content/themes/twentytwentyone/header.php:16 Stack trace: #0 {main} thrown in /home/cezarypiatek1990/public_html/testwordpressa/wp-content/themes/twentytwentyone/header.php on line 16