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: 24.04.2024 @ 01:51
Script: /board/usercp.php?action=addsubscription&boardid=5&sid=02bde56e635a203792266fd5d4b90df2
Referer: