Fatal error: Uncaught Error: Call to undefined function register_block_style() in /home/korosuke48/sbc-aqua.net/public_html/wp-content/themes/x-t9/inc/block-styles.php:9 Stack trace: #0 /home/korosuke48/sbc-aqua.net/public_html/wp-content/themes/x-t9/functions.php(56): require() #1 /home/korosuke48/sbc-aqua.net/public_html/wp-settings.php(479): include('/home/korosuke4...') #2 /home/korosuke48/sbc-aqua.net/public_html/wp-config.php(93): require_once('/home/korosuke4...') #3 /home/korosuke48/sbc-aqua.net/public_html/wp-load.php(37): require_once('/home/korosuke4...') #4 /home/korosuke48/sbc-aqua.net/public_html/wp-blog-header.php(13): require_once('/home/korosuke4...') #5 /home/korosuke48/sbc-aqua.net/public_html/index.php(17): require('/home/korosuke4...') #6 {main} thrown in /home/korosuke48/sbc-aqua.net/public_html/wp-content/themes/x-t9/inc/block-styles.php on line 9