Fatal error: Uncaught Error: Call to undefined function block_has_support() in /home/kouseiji/www/wp-content/plugins/vk-blocks-pro/inc/vk-blocks-pro/extensions/common/custom-css-extension.php:20 Stack trace: #0 /home/kouseiji/www/wp-content/plugins/vk-blocks-pro/inc/vk-blocks-pro/extensions/common/custom-css-extension.php(84): vk_blocks_has_custom_css_support('core/heading') #1 /home/kouseiji/www/wp-includes/class-wp-hook.php(287): vk_blocks_render_custom_css('\n<h2>\xE4\xBB\x8F\xE5\xA3\x87\xE3\x83\xBB\xE4...', Array) #2 /home/kouseiji/www/wp-includes/plugin.php(206): WP_Hook->apply_filters('\n<h2>\xE4\xBB\x8F\xE5\xA3\x87\xE3\x83\xBB\xE4...', Array) #3 /home/kouseiji/www/wp-includes/class-wp-block.php(237): apply_filters('render_block', '\n<h2>\xE4\xBB\x8F\xE5\xA3\x87\xE3\x83\xBB\xE4...', Array) #4 /home/kouseiji/www/wp-includes/blocks.php(737): WP_Block->render() #5 /home/kouseiji/www/wp-includes/blocks.php(775): render_block(Array) #6 /home/kouseiji/www/wp-includes/class-wp-hook.php(287): do_blocks('<!-- wp:heading...') in /home/kouseiji/www/wp-content/plugins/vk-blocks-pro/inc/vk-blocks-pro/extensions/common/custom-css-extension.php on line 20