( ! ) Warning: mysqli_real_connect(): (HY000/2002): Connection refused in /var/www/wchess.com/htdocs/wp-includes/wp-db.php on line 1612
Call Stack
#	Time	Memory	Function	Location
1	0.0001	396160	{main}( )	.../index.php:0
2	0.0002	396448	require( '/var/www/wchess.com/htdocs/wp-blog-header.php' )	.../index.php:17
3	0.0002	396800	require_once( '/var/www/wchess.com/htdocs/wp-load.php' )	.../wp-blog-header.php:13
4	0.0002	397552	require_once( '/var/www/wchess.com/htdocs/wp-config.php' )	.../wp-load.php:37
5	0.0003	399144	require_once( '/var/www/wchess.com/htdocs/wp-settings.php' )	.../wp-config.php:113
6	0.0058	1060952	require_wp_db( )	.../wp-settings.php:120
7	0.0058	1073368	require_once( '/var/www/wchess.com/htdocs/wp-content/db.php' )	.../load.php:415
8	0.0060	1096936	W3TC\DbCache_Wpdb::instance( )	.../db.php:41
9	0.0061	1183960	W3TC\DbCache_WpdbLegacy->initialize( )	.../DbCache_Wpdb.php:53
10	0.0061	1183960	W3TC\DbCache_WpdbInjection_QueryCaching->initialize( )	.../DbCache_WpdbLegacy.php:104
11	0.0061	1183960	W3TC\_CallUnderlying->initialize( )	.../DbCache_WpdbInjection_QueryCaching.php:232
12	0.0062	1183960	W3TC\DbCache_WpdbLegacy->initialize( )	.../DbCache_WpdbLegacy.php:367
13	0.0062	1183960	W3TC\DbCache_WpdbInjection->initialize( )	.../DbCache_WpdbLegacy.php:104
14	0.0062	1183960	W3TC\DbCache_WpdbLegacy->default_initialize( )	.../DbCache_WpdbInjection.php:38
15	0.0062	1183960	W3TC\DbCache_WpdbLegacy->__construct( )	.../DbCache_WpdbLegacy.php:226
16	0.0062	1184368	W3TC\DbCache_WpdbLegacy->db_connect( )	.../wp-db.php:639
17	0.0062	1184368	W3TC\DbCache_WpdbLegacy->db_connect( )	.../DbCache_WpdbLegacy.php:97
18	0.0063	1185568	mysqli_real_connect ( )	.../wp-db.php:1612

WordPress › Error

Connection refused

Error establishing a database connection

This either means that the username and password information in your wp-config.php file is incorrect or we can’t contact the database server at localhost. This could mean your host’s database server is down.

Are you sure you have the correct username and password?
Are you sure that you have typed the correct hostname?
Are you sure that the database server is running?

If you’re unsure what these terms mean you should probably contact your host. If you still need help you can always visit the WordPress Support Forums.