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 @ 10:34
Script: /board/usercp.php?action=addsubscription&threadid=951&sid=1fa4b93f4b8f64cac6da2dd1aa43db34
Referer: