Warning: mysqli_real_connect(): (HY000/2002): Connection refused in /var/www/html/wp-includes/class-wpdb.php on line 1994 Call Stack: 0.0002 455072 1. {main}() /var/www/html/index.php:0 0.0002 455424 2. require('/var/www/html/wp-blog-header.php') /var/www/html/index.php:17 0.0002 456064 3. require_once('/var/www/html/wp-load.php') /var/www/html/wp-blog-header.php:13 0.0002 456816 4. require_once('/var/www/html/wp-config.php') /var/www/html/wp-load.php:50 0.0003 566920 5. require_once('/var/www/html/wp-settings.php') /var/www/html/wp-config.php:151 0.0013 778368 6. require_wp_db() /var/www/html/wp-settings.php:136 0.0013 780168 7. wpdb->__construct($dbuser = 'wp', $dbpassword = '[Sensitive Parameter]', $dbname = 'wordpress', $dbhost = 'db:3306') /var/www/html/wp-includes/load.php:724 0.0013 780216 8. wpdb->db_connect($allow_bail = ???) /var/www/html/wp-includes/class-wpdb.php:772 0.5105 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.