DB Error: unknown error

SELECT * FROM blog_user ,blog_news LEFT JOIN blog_category ON blog_category.categoryID = blog_news.categoryID WHERE blog_user.userID = blog_news.userID AND newsStatus=1 AND newsDate = '2016-12-28' AND blog_news.categoryID = 2 AND newsTimeStamp <= 1532305057 GROUP BY blog_news.newsID ORDER BY newsTime DESC [nativecode=1034 ** Incorrect key file for table: 'blog_user'. Try to repair it]