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 @ 15:03
Script: /board/search.php?action=user&userid=66&sid=c859fd266ce5f685baa9672531d5a9db
Referer: