Fatal error: Uncaught mysqli_sql_exception: php_network_getaddresses: getaddrinfo for hostname failed: Temporary failure in name resolution in /var/www/html/index.php:321 Stack trace: #0 /var/www/html/index.php(321): mysqli->__construct('hostname', 'username', 'password', 'database') #1 {main} thrown in /var/www/html/index.php on line 321