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: 19.04.2024 @ 07:41
Script: /board/search.php?action=user&userid=50&sid=0c1f0346417a0b32d69f4375535b4c5c
Referer: