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 @ 15:29
Script: /board/search.php?action=user&userid=3&sid=6c34f55880a53ada8c725bb866c6bfca
Referer: