Warning: mysqli_connect(): php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /var/www/html/classes/Conexao.php on line 12

Warning: mysqli_connect(): (HY000/2002): php_network_getaddresses: getaddrinfo failed: Temporary failure in name resolution in /var/www/html/classes/Conexao.php on line 12
mysql_error