Fix when LANGUAGE_CODE is null
Fix when LANGUAGE_CODE is null

smellman/sotmjp-website,smellman/sotmjp-website,smellman/sotmjp-website,smellman/sotmjp-website,pyconjp/pyconjp-website,osmfj/sotmjp-website,osmfj/sotmjp-website,osmfj/sotmjp-website,pyconjp/pyconjp-website,pyconjp/pyconjp-website,pyconjp/pyconjp-website,osmfj/sotmjp-website