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: 18.04.2024 @ 22:19
Script: /board/thread.php?goto=lastpost&threadid=651&sid=c6d3af6b35e2eb550f5b31c1dbc1ba6b
Referer: