Fatal error: Uncaught Error: Class 'WP_Block_Supports' not found in /home/FeRRKNG/public_html/szkolazs1mm/wordpress/wp-includes/block-supports/custom-classname.php:61 Stack trace: #0 {main} thrown in /home/FeRRKNG/public_html/szkolazs1mm/wordpress/wp-includes/block-supports/custom-classname.php on line 61