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: 18.04.2024 @ 01:43
Script: /board/search.php?action=user&userid=53&sid=43ea6b634a7542416e84331bbc15514d
Referer: