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: 18.04.2024 @ 02:58
Script: /board/usercp.php?action=buddy&add=66&sid=b648da77111bc7c8758fcd5257a6d6db
Referer: