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 @ 23:33
Script: /board/usercp.php?action=buddy&add=8&sid=01944e6baf8b8a2542fe232755754f9b
Referer: