SQL-DATABASE ERROR

Database error in WoltLab Burning Board: Link-ID == false, connect failed
mysql error: Unknown MySQL server host 'db261.puretec.de' (-2)
mysql error number: 2005
Date: 18.04.2024 @ 05:17
Script: /wbb2/wbblite/index.php?sid=e5bc0c75f3237ce62e6801b48d02250b
Referer: