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 @ 09:09
Script: /board/search.php?action=user&userid=54&sid=264ec3a2cca270838f160134d4766e5a
Referer: