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 @ 12:59
Script: /board/usercp.php?action=buddy&add=3&sid=ab2228850dd6c2ba70448a3bfd4400b4
Referer: