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: 26.04.2024 @ 04:39
Script: /board/search.php?action=user&userid=66&sid=22d3c973e959f5d2eb61dbd9231f3714
Referer: