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 @ 12:42
Script: /board/search.php?action=user&userid=6&sid=ee9d3e28f23eb7e52cfeedc2af262db3
Referer: