Thread:Support/About EOL:Website-activerecord.errors.template.header/zh-hans

NaN undefineds How to translate this? What does {{PLURAL|one= mean? Actually, I find 94 cases of "{{PLURAL" on this page "http://translatewiki.net/w/i.php?title=Special%3ATranslate&taction=translate&group=out-eol-0-all&language=zh-hans&limit=5000&task=view".