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 @ 02:24
Script: /board/search.php?action=user&userid=8&sid=965e3f73b927c0c5863c96f85fff356e
Referer: