Fatal error: Uncaught Error: Call to undefined function json_decode() in /var/www/home/yshair.jp/html/wp-includes/class-wp-block-parser.php:232 Stack trace: #0 /var/www/home/yshair.jp/html/wp-includes/blocks.php(538): WP_Block_Parser->parse() #1 /var/www/home/yshair.jp/html/wp-includes/blocks.php(278): parse_blocks() #2 /var/www/home/yshair.jp/html/wp-includes/formatting.php(4969): filter_block_content() #3 /var/www/home/yshair.jp/html/wp-includes/class-wp-hook.php(288): wp_pre_kses_block_attributes() #4 /var/www/home/yshair.jp/html/wp-includes/plugin.php(206): WP_Hook->apply_filters() #5 /var/www/home/yshair.jp/html/wp-includes/kses.php(914): apply_filters() #6 /var/www/home/yshair.jp/html/wp-includes/kses.php(737): wp_kses_hook() #7 /var/www/home/yshair.jp/html/wp-includes/class-wp-theme.php(849): wp_kses() #8 /var/www/home/yshair.jp/html/wp-includes/class-wp-theme.php(784): WP_Theme->sanitize_header() #9 /var/www/home/yshair.jp/html/wp-includes/class-wp-theme.php(801): WP_Theme->get() #10 /var/www/home/yshair.jp/html/w in /var/www/home/yshair.jp/html/wp-includes/class-wp-block-parser.php on line 232