Error

SQLSTATE[HY000] [2002] Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2)

PDOException: SQLSTATE[HY000] [2002] Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (2) (~/admin/_includes/_functions/database.class.php:32) at PDO->__construct("mysql:host=*****;dbname=*****;charset=utf8", "*****", "*****") (~/admin/_includes/_functions/database.class.php:32) at Daveismyname\PdoWrapper\Database::get("*****", "*****", "*****") (~/admin/_includes/_config/database.php:7) at require_once("~/admin/_includes/_config/database.php") (~/_includes/config.php:13) at require_once("~/_includes/config.php") (~/sitemap.php:1)