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: 25.04.2024 @ 09:49
Script: /board/search.php?action=user&userid=6&sid=015fb4d428ddb9c609c8ed48702e845a
Referer: