DATABASE ERROR:

SELECT con.*,
                       con.pubdate as fdate,
                       u.nickname as author,
                       u.login as author_login
                       FROM arms_content con
				       LEFT JOIN arms_category cat ON cat.id = con.category_id
				       LEFT JOIN arms_users u ON u.id = con.user_id
                       WHERE con.published = 1 AND con.showlatest = 1
                      AND (con.is_end=0 OR (con.is_end=1 AND con.enddate >= '2018-10-21 09:30:47' AND con.pubdate <= '2018-10-21 09:30:47'))
                      AND (cat.NSLeft >= 268 AND cat.NSRight <= 269)
				ORDER BY con.id DESC
				LIMIT 3

Incorrect key file for table '/var/tmp/#sql_840_0.MYI'; try to repair it