Warning: mysqli::__construct(): php_network_getaddresses: getaddrinfo for ttranking.no.mysql failed: Name or service not known in /var/www/html/ttranking/db_connect.php on line 13

Fatal error: Uncaught mysqli_sql_exception: php_network_getaddresses: getaddrinfo for ttranking.no.mysql failed: Name or service not known in /var/www/html/ttranking/db_connect.php:13 Stack trace: #0 /var/www/html/ttranking/db_connect.php(13): mysqli->__construct() #1 /var/www/html/ttranking/test_pool_pdf.php(2): require_once('...') #2 {main} thrown in /var/www/html/ttranking/db_connect.php on line 13