Piwigo encountered a non recoverable error

[mysql error 1045] Access denied for user 'frederic.secchi'@'172.20.245.52' (using password: YES)
mysql_connect

#1	my_error /mnt/105/sda/4/0/frederic.secchi/PHP/include/common.inc.php(106)
#2	include_once /mnt/105/sda/4/0/frederic.secchi/PHP/about.php(26)

Fatal error: [mysql error 1045] Access denied for user 'frederic.secchi'@'172.20.245.52' (using password: YES) mysql_connect #1 my_error /mnt/105/sda/4/0/frederic.secchi/PHP/include/common.inc.php(106) #2 include_once /mnt/105/sda/4/0/frederic.secchi/PHP/about.php(26) in /mnt/105/sda/4/0/frederic.secchi/PHP/include/functions_html.inc.php on line 690