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: 27.04.2024 @ 01:11
Script: /board/markread.php?sid=7f5ee6e212612fa71742e5543a4b5e99
Referer: