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: 16.04.2024 @ 16:04
Script: /board/search.php?action=user&userid=50&sid=9a19aff6ab1b7dd57f07f26eae39cc82
Referer: