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: 25.04.2024 @ 12:58
Script: /board/usercp.php?action=buddy&add=44&sid=67a8c0ed1f4b08d3bfbf310cae351668
Referer: