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: 27.04.2024 @ 03:26
Script: /board/newthread.php?boardid=9&sid=4fe5cce55270ecc82416a97bb72f438d
Referer: