Fatal error: Uncaught Error: Class 'WP_Block_Supports' not found in /usr/home/michalbialy/domains/ilonasobiech.pl/public_html/wp-includes/block-supports/layout.php:439
Stack trace:
#0 {main}
  thrown in /usr/home/michalbialy/domains/ilonasobiech.pl/public_html/wp-includes/block-supports/layout.php on line 439