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: 25.05.2022 @ 10:20
Script: /board/search.php?action=24h&sid=49b3433f8aece345f34e8d82dee4eeda
Referer: