Fatal error: Uncaught Error: Call to undefined function add_shortcode() in /usr/home/michalbialy/domains/ilonasobiech.pl/public_html/wp-includes/media.php:2167
Stack trace:
#0 {main}
  thrown in /usr/home/michalbialy/domains/ilonasobiech.pl/public_html/wp-includes/media.php on line 2167