Fatal error: Uncaught Error: Call to undefined function add_action() in /home/antenaserwis/public_html/antenylodz/wp-includes/blocks/page-list-item.php:14
Stack trace:
#0 {main}
thrown in /home/antenaserwis/public_html/antenylodz/wp-includes/blocks/page-list-item.php on line 14