Fatal error: Uncaught ArgumentCountError: Too few arguments to function in_category(), 0 passed in /home/alpha0706/ishiyama-toryo.jp/public_html/wp-content/themes/ishiyama/header.php on line 273 and at least 1 expected in /home/alpha0706/ishiyama-toryo.jp/public_html/wp-includes/category-template.php:257 Stack trace: #0 /home/alpha0706/ishiyama-toryo.jp/public_html/wp-content/themes/ishiyama/header.php(273): in_category() #1 /home/alpha0706/ishiyama-toryo.jp/public_html/wp-includes/template.php(810): require_once('/home/alpha0706...') #2 /home/alpha0706/ishiyama-toryo.jp/public_html/wp-includes/template.php(745): load_template('/home/alpha0706...', true, Array) #3 /home/alpha0706/ishiyama-toryo.jp/public_html/wp-includes/general-template.php(48): locate_template(Array, true, true, Array) #4 /home/alpha0706/ishiyama-toryo.jp/public_html/wp-content/themes/ishiyama/author.php(1): get_header() #5 /home/alpha0706/ishiyama-toryo.jp/public_html/wp-includes/template-loader.php(106): include('/home/alpha0706...') #6 /home/alpha070 in /home/alpha0706/ishiyama-toryo.jp/public_html/wp-includes/category-template.php on line 257