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: 19.04.2024 @ 10:06
Script: /board/usercp.php?action=addsubscription&boardid=3&sid=920a42549f4d95a62a116f6d2537bdfc
Referer: