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 @ 12:17
Script: /report.php?postid=2100493&sid=b91b0e4557f91fdfdae48a9dc5c8f5a5
Referer: