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 @ 04:59
Script: /board/search.php?action=user&userid=8&sid=21f455d70797a13abff449a16d66a4dd
Referer: