SQL-DATABASE ERROR

Database error in (): Link-ID == false, connect failed
mysql error:
mysql error number:
mysql version: unknown
php version: 7.4.33-nmm5
Date: 01.07.2024 @ 00:00
Script: /wbb2/index.php/banner/images/smilies/1_standard/sbox_img/portalboxen/portalboxen/banner/banner-sunplace.png
Referer: