Fatal error: Uncaught Error: Class 'WP_Block_Supports' not found in H:\root\home\agubski-002\www\alexgubski\blog\wp-includes\block-supports\background.php:108 Stack trace: #0 {main} thrown in H:\root\home\agubski-002\www\alexgubski\blog\wp-includes\block-supports\background.php on line 108