SQL-DATABASE ERROR

Database error in WoltLab Burning Board (): Link-ID == false, connect failed
mysql error:
mysql error number:
mysql version: unknown
php version: 7.2.34-36+ubuntu18.04.1+deb.sury.org+1
Date: 28.11.2023 @ 19:34
Script: /forum/profile.php?userid=13342&sid=370f74408b00a6e82f17963aee9e2796
Referer: