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: 20.04.2024 @ 04:46
Script: /board/search.php?action=user&userid=54&sid=3f3e4edfd13af405006ec5481a2c292c
Referer: