Fatal error: Uncaught Error: Class "WP_Block_Supports" not found in /usr/home/AriesPB/domains/elektrobud-koszalin.pl/public_html/wp-includes/block-supports/shadow.php:75
Stack trace:
#0 {main}
  thrown in /usr/home/AriesPB/domains/elektrobud-koszalin.pl/public_html/wp-includes/block-supports/shadow.php on line 75