Piwigo encountered a non recoverable error

[mysql error 1275] Server is running in --secure-auth mode, but 'mandulakincsei'@'localhost' has a password in the old format; please change the password to the new format
Can't connect to server

#1	my_error /www/htdocs/www.mandulakincsei.hu/include/common.inc.php(140)
#2	include_once /www/htdocs/www.mandulakincsei.hu/picture.php(25)