Warning: mysqli::__construct(): php_network_getaddresses: getaddrinfo for db failed: Temporary failure in name resolution in /var/www/html/includes/db.php on line 10

Fatal error: Uncaught mysqli_sql_exception: php_network_getaddresses: getaddrinfo for db failed: Temporary failure in name resolution in /var/www/html/includes/db.php:10 Stack trace: #0 /var/www/html/includes/db.php(10): mysqli->__construct('db', 'user', Object(SensitiveParameterValue), 'skyremix') #1 /var/www/html/index.php(2): require_once('/var/www/html/i...') #2 {main} thrown in /var/www/html/includes/db.php on line 10