Hello world!
Fatal error: Uncaught Error: Call to undefined function understrap_posted_on() in /home/ishioroshiya/oyakonojikanlabo.jp/public_html/osora-no-ehon/wp/wp-content/themes/osora-no-ehon/loop-templates/content-single.php:20 Stack trace: #0 /home/ishioroshiya/oyakonojikanlabo.jp/public_html/osora-no-ehon/wp/wp-includes/template.php(725): require() #1 /home/ishioroshiya/oyakonojikanlabo.jp/public_html/osora-no-ehon/wp/wp-includes/template.php(672): load_template('/home/ishiorosh...', false) #2 /home/ishioroshiya/oyakonojikanlabo.jp/public_html/osora-no-ehon/wp/wp-includes/general-template.php(168): locate_template(Array, true, false) #3 /home/ishioroshiya/oyakonojikanlabo.jp/public_html/osora-no-ehon/wp/wp-content/themes/osora-no-ehon/single.php(28): get_template_part('loop-templates/...', 'single') #4 /home/ishioroshiya/oyakonojikanlabo.jp/public_html/osora-no-ehon/wp/wp-includes/template-loader.php(106): include('/home/ishiorosh...') #5 /home/ishioroshiya/oyakonojikanlabo.jp/public_html/osora-no-ehon/wp/wp-blog-header.php(19): in /home/ishioroshiya/oyakonojikanlabo.jp/public_html/osora-no-ehon/wp/wp-content/themes/osora-no-ehon/loop-templates/content-single.php on line 20