SQL-DATABASE ERROR

Database error in WoltLab Burning Board (): Link-ID == false, connect failed
mysql error: Host '1blu' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'
mysql error number: 1129
mysql version: unknown
php version: 5.3.29
Date: 17.01.2019 @ 04:35
Script: /misc.php?action=faq1&sid=8ae997b5a2d8d8f42badb904711d75a8
Referer: