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: 24.04.2024 @ 18:19
Script: /board/formmail.php?userid=1&sid=32dd67a50521ffe6d035ba877567a8dd
Referer: