Zenphoto encountered an error

MySql Error: Zenphoto received the error SQLSTATE[HY000] [2002] php_network_getaddresses: getaddrinfo failed: Name or service not known when connecting to the database server.

Backtrace:

					
   -> db_connect (functions-basic.php [83])
     -> require_once (functions.php [18])
       -> require_once (template-functions.php [10])
         -> require_once (index.php [22])