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 @ 16:14
Script: /board/usercp.php?action=buddy&add=50&sid=1af24291f4a6e04366458c58c22364a5
Referer: