Warning: mysqli_real_connect(): (HY000/2002): Connection refused in /var/www/html/wp-includes/class-wpdb.php on line 1994 Call Stack: 0.0162 455072 1. {main}() /var/www/html/index.php:0 0.0162 455424 2. require('/var/www/html/wp-blog-header.php') /var/www/html/index.php:17 0.0162 456064 3. require_once('/var/www/html/wp-load.php') /var/www/html/wp-blog-header.php:13 0.1199 456816 4. require_once('/var/www/html/wp-config.php') /var/www/html/wp-load.php:50 0.1374 566920 5. require_once('/var/www/html/wp-settings.php') /var/www/html/wp-config.php:151 0.3698 778368 6. require_wp_db() /var/www/html/wp-settings.php:136 0.3699 780168 7. wpdb->__construct($dbuser = 'wp', $dbpassword = '[Sensitive Parameter]', $dbname = 'wordpress', $dbhost = 'db:3306') /var/www/html/wp-includes/load.php:724 0.3699 780216 8. wpdb->db_connect($allow_bail = ???) /var/www/html/wp-includes/class-wpdb.php:772 0.5098 780928 9. mysqli_real_connect($mysql = class mysqli { public $client_info = 'mysqlnd 8.2.30'; public $client_version = 80230; public $connect_errno = 2002; public $connect_error = 'Connection refused'; public $errno = 2002; public $error = 'Connection refused' }, $hostname = 'db', $username = 'wp', $password = '[Sensitive Parameter]', $database = NULL, $port = 3306, $socket = NULL, $flags = 0) /var/www/html/wp-includes/class-wpdb.php:1994 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 that contact with the database server at db:3306 could not be established. This could mean your host’s database server is down.

If you are unsure what these terms mean you should probably contact your host. If you still need help you can always visit the WordPress support forums.