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: 19.04.2024 @ 03:58
Script: /board/search.php?action=user&userid=38&sid=75df813fdb9d7af67f05b526ee38e9f4
Referer: