[…]
Fatal error: Uncaught Error: Call to undefined function understrap_link_pages() in /home/grounbuil/grounbuil.co.jp/public_html/test/wp-content/themes/understrap/loop-templates/content.php:39 Stack trace: #0 /home/grounbuil/grounbuil.co.jp/public_html/test/wp-includes/template.php(812): require() #1 /home/grounbuil/grounbuil.co.jp/public_html/test/wp-includes/template.php(745): load_template('/home/grounbuil...', false, Array) #2 /home/grounbuil/grounbuil.co.jp/public_html/test/wp-includes/general-template.php(206): locate_template(Array, true, false, Array) #3 /home/grounbuil/grounbuil.co.jp/public_html/test/wp-content/themes/understrap/archive.php(50): get_template_part('loop-templates/...', '') #4 /home/grounbuil/grounbuil.co.jp/public_html/test/wp-includes/template-loader.php(106): include('/home/grounbuil...') #5 /home/grounbuil/grounbuil.co.jp/public_html/test/wp-blog-header.php(19): require_once('/home/grounbuil...') #6 /home/grounbuil/grounbuil.co.jp/public_html/test/index.php(17): require('/home/grounbuil...') #7 in /home/grounbuil/grounbuil.co.jp/public_html/test/wp-content/themes/understrap/loop-templates/content.php on line 39