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 @ 18:34
Script: /board/usercp.php?action=buddy&add=54&sid=264ec3a2cca270838f160134d4766e5a
Referer: