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: 16.04.2024 @ 07:31
Script: /board/search.php?action=user&userid=42&sid=c3d2d842eb6d86d802696e74f1e61ea4
Referer: