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: 19.04.2024 @ 19:55
Script: /forum/team.php?sid=3360ba5951b6188c5c715d8bf06d2d57
Referer: http://www.ichat.de/forum/team.php?sid=3360ba5951b6188c5c715d8bf06d2d57