Fatal error: Uncaught Error: Call to undefined function wp_is_serving_rest_request() in /export/sd205/www/jp/r/e/gmoserver/2/3/sd0775223/biclogi.com/wordpress-5.8.0-ja-jetpack_webfont-undernavicontrol/wp-includes/class-wp-query.php:1042 Stack trace: #0 /export/sd205/www/jp/r/e/gmoserver/2/3/sd0775223/biclogi.com/wordpress-5.8.0-ja-jetpack_webfont-undernavicontrol/wp-includes/class-wp-query.php(1897): WP_Query->parse_query() #1 /export/sd205/www/jp/r/e/gmoserver/2/3/sd0775223/biclogi.com/wordpress-5.8.0-ja-jetpack_webfont-undernavicontrol/wp-includes/class-wp-query.php(3949): WP_Query->get_posts() #2 /export/sd205/www/jp/r/e/gmoserver/2/3/sd0775223/biclogi.com/wordpress-5.8.0-ja-jetpack_webfont-undernavicontrol/wp-includes/post.php(2417): WP_Query->query(Array) #3 /export/sd205/www/jp/r/e/gmoserver/2/3/sd0775223/biclogi.com/wordpress-5.8.0-ja-jetpack_webfont-undernavicontrol/wp-content/plugins/advanced-custom-fields/includes/class-acf-internal-post-type.php(399): get_posts(Array) #4 /export/sd205/www/jp/r/e/gmoserver/2/3/s in /export/sd205/www/jp/r/e/gmoserver/2/3/sd0775223/biclogi.com/wordpress-5.8.0-ja-jetpack_webfont-undernavicontrol/wp-includes/class-wp-query.php on line 1042