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 = '2016-03-31' AND newsTimeStamp <= 1532305308 GROUP BY blog_news.newsID ORDER BY newsTime DESC [nativecode=1034 ** Incorrect key file for table: 'blog_user'. Try to repair it]