SQL-DATABASE ERROR

Database error in WoltLab Burning Board (): Link-ID == false, connect failed
mysql error:
mysql error number: 0
mysql version: unknown
php version: 7.3.33
Date: 23.04.2024 @ 07:33
Script: /wbb/index.php?sid=151d74d74818bbe2da66b811519b61a0
Referer: