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 @ 08:05
Script: /board/search.php?action=user&userid=66&sid=4a302c5ebfa238526bc5741dfca80b5e
Referer: