Database connection failed: Can't connect to local server through socket '/var/lib/mysql/mysql.sock' (2)

Stack Trace:

File: /home/u1014823/public_html/ejournal/lib/pkp/includes/bootstrap.inc.php line 41
Function: PKPApplication->__construct()

File: /home/u1014823/public_html/ejournal/index.php line 65
Function: require("/home/u1014823/public_html/ejournal/lib/pkp/includes/bootstrap.i...")