Warning: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (111) in /var/www/html/mediadoc/connection.inc.php on line 10

Warning: MySQL Connection Failed: Can't connect to local MySQL server through socket '/var/lib/mysql/mysql.sock' (111) in /var/www/html/mediadoc/connection.inc.php on line 10
La base de données n'arrive pas à se connecter