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: 19.04.2024 @ 02:14
Script: /board/formmail.php?threadid=938&sid=e50264af4ef57d82c060c2d611ff9f42
Referer: