Thread:Project:Support desk/Cannot contact the database server: Access denied for user

So I upgraded the mediaWiki version by overwriting the old version with new version. I upgraded from 1.22.6 to 1.23.5. But as soon as I overwrote the directory and tried to open the website on web browser, I got :

(Cannot contact the database server: Access denied for user 'newqmrasite'@'localhost' (using password: YES) (localhost))

PLEASE HELP!!!!!!