SQL-DATABASE ERROR

Database error in WoltLab Burning Board: Link-ID == false, connect failed
mysql error: The server requested authentication method unknown to the client
mysql error number: 2054
Date: 29.03.2024 @ 09:21
Script: /board/addreply.php?threadid=918&sid=145d8c682b6c3519f7dd89dd7b3919cc
Referer: