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: 25.04.2024 @ 10:17
Script: /board/search.php?action=user&userid=8&sid=667c09355a56304ce28978a92a3a0696
Referer: