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: 29.03.2024 @ 06:24
Script: /board/search.php?action=user&userid=1&sid=e6d12bcbc40382fc6b8e9f236b56b71c
Referer: