Piwigo encountered a non recoverable error

[mysql error 1045] Access denied for user 'gallery'@'localhost' (using password: YES)
Can't connect to server

#1	my_error /home/storm/sites/rpgeurope-com/public/gallery/include/common.inc.php(115)
#2	include_once /home/storm/sites/rpgeurope-com/public/gallery/feed.php(25)