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: 25.04.2024 @ 21:54
Script: /board/formmail.php?threadid=22&sid=6f018b64ccb7ec193cb9f551ce73f802
Referer: