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: 29.03.2024 @ 12:38
Script: /board/usercp.php?action=addsubscription&boardid=13&sid=d16ca53fb998c955fda568f7280bd868
Referer: