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: 25.04.2024 @ 13:39
Script: /board/usercp.php?action=addsubscription&boardid=11&sid=4f5b316718811fc85c9670086c4c7c54
Referer: