A Database Error Occurred

Error Number: 1064

You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ') order by cms_article.id desc limit 7' at line 1

select cms_article.id, title, updatetime, picture, alias from cms_article inner join cms_article_class on cms_article.class = cms_article_class.id where 1 = 1 and cms_article.class in () order by cms_article.id desc limit 7