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: 22.01.2019 @ 12:31
Script: /thread.php?threadid=8455&sid=234bb0b8c0964825a6506a00d398aad1
Referer: