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/formmail.php?threadid=842&sid=855eb838dce1b7837fc674fbe72a33ee
Referer: