Piwigo encountered a non recoverable error

[mysql error 1040] Too many connections
Can't connect to server

#1	my_error /var/www/sda/6/2/poirierstephane/photos/include/common.inc.php(140)
#2	include_once /var/www/sda/6/2/poirierstephane/photos/index.php(26)

Fatal error: [mysql error 1040] Too many connections Can't connect to server #1 my_error /var/www/sda/6/2/poirierstephane/photos/include/common.inc.php(140) #2 include_once /var/www/sda/6/2/poirierstephane/photos/index.php(26) in /var/www/sda/6/2/poirierstephane/photos/include/functions_html.inc.php on line 428