SQL-DATABASE ERROR

Database error in WoltLab Burning Board: Link-ID == false, connect failed
mysql error: Host 'mis35.de' is blocked because of many connection errors; unblock with 'mysqladmin flush-hosts'
mysql error number: 1129
Date: 23.10.2018 @ 12:09
Script: /thread.php?threadid=709&page=2&sid=92441d3119b674d63dd84b7da03bf10b
Referer: