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 @ 18:56
Script: /board/formmail.php?threadid=651&sid=70d4ba858b782cd899d043bdbd95457a
Referer: