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: 20.04.2024 @ 05:09
Script: /board/search.php?action=user&userid=3&sid=b433e52806f3ec6c4a2e1403ccf10eaa
Referer: