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: 23.04.2024 @ 14:07
Script: /board/board.php?boardid=11&sid=476b11baeda5b95b1e426adc399ca8c5
Referer: