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: 19.01.2019 @ 04:55
Script: /misc.php?action=faq1&sid=1729b3ebe1529fe2a1919e414a18e661
Referer: