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 @ 15:39
Script: /board/search.php?action=user&userid=50&sid=c52832ebdc3e50923371265b2045b1c1
Referer: