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 @ 11:42
Script: /board/formmail.php?threadid=930&sid=8336770e792f3a23f76b9807816ece26
Referer: