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 @ 19:55
Script: /board/profile.php?userid=66&sid=b85c339cc7a173d4af22b8effc7dcfca
Referer: