品番の意味はありますか？

Fatal error: Uncaught TypeError: array_filter(): Argument #1 ($array) must be of type array, null given in /home/xs252024/aristo-japan.co.jp/public_html/cms/wp-content/themes/aristoJapan/single.php:25 Stack trace: #0 /home/xs252024/aristo-japan.co.jp/public_html/cms/wp-content/themes/aristoJapan/single.php(25): array_filter(NULL) #1 /home/xs252024/aristo-japan.co.jp/public_html/cms/wp-includes/template-loader.php(106): include('/home/xs252024/...') #2 /home/xs252024/aristo-japan.co.jp/public_html/cms/wp-blog-header.php(19): require_once('/home/xs252024/...') #3 /home/xs252024/aristo-japan.co.jp/public_html/index.php(17): require('/home/xs252024/...') #4 {main} thrown in /home/xs252024/aristo-japan.co.jp/public_html/cms/wp-content/themes/aristoJapan/single.php on line 25