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 @ 20:32
Script: /board/usercp.php?action=buddy&add=53&sid=9816598c3381c727d0fd799ebf0ccb74
Referer: