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 @ 17:32
Script: /board/search.php?action=user&userid=3&sid=b3247b0b457fa6ae5bea87ec992b7cbc
Referer: