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 @ 20:14
Script: /board/search.php?action=user&userid=54&sid=ba39f876ae0126c6ebb33585711bc2bb
Referer: