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 @ 08:03
Script: /board/search.php?action=user&userid=8&sid=41acf2a422c9362a1ae60e46fe8f421b
Referer: