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: 23.01.2019 @ 06:00
Script: /misc.php?action=faq2&sid=5fce5afab4d965dc67f3f42ddab8482e
Referer: