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: 20.04.2024 @ 16:19
Script: /board/search.php?action=user&userid=9&sid=0e486685f4e92bf147447b589d16b25c
Referer: