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: 28.03.2024 @ 08:59
Script: /board/usercp.php?action=buddy&add=10&sid=019a29383f1695c6808e2abca0291c46
Referer: