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 @ 15:21
Script: /board/search.php?action=user&userid=53&sid=60b5344b43b81ded1afb76e7a0e2f94e
Referer: