Problem with database!

PDOException: SQLSTATE[HY000] [1275] Server is running in --secure-auth mode, but 'weapon'@'localhost' has a password in the old format; please change the password to the new format in /var/www/hamrospace/skins/class/database.php:8
Stack trace:
#0 /var/www/hamrospace/skins/class/database.php(8): PDO->__construct()
#1 /var/www/hamrospace/skins/index.php(10): DataBase->__construct()
#2 {main}