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: 26.04.2024 @ 12:19
Script: /board/usercp.php?action=addsubscription&boardid=6&sid=f85fa1f4287aee824220184e2befdfc1
Referer: