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: 28.03.2024 @ 19:31
Script: /board/search.php?action=user&userid=12&sid=8aab40750d37740e9f8eeaf98a7563c6
Referer: