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 @ 19:30
Script: /board/search.php?action=user&userid=6&sid=46083783eb7f43716f900e626f29d547
Referer: