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: 28.03.2024 @ 10:28
Script: /board/search.php?action=user&userid=50&sid=6e2261df82b8fd19677697517ddf0341
Referer: