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: 18.04.2024 @ 04:03
Script: /board/search.php?action=user&userid=50&sid=415336362f8020f8dc3654226ee54fae
Referer: