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: 08.05.2024 @ 16:57
Script: /board/usercp.php?action=signature_edit&sid=2e9dd9b6db83455c39140a717fc46655
Referer: