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: 23.04.2024 @ 19:15
Script: /board/usercp.php?action=buddy&add=1&sid=c97b1c6a4ccccd7534752c82b1c13920
Referer: