SQL-DATABASE ERROR

Database error in WoltLab Burning Board (): Link-ID == false, connect failed
mysql error: Access denied for user 'web6'@'localhost' (using password: YES)
mysql error number: 1045
mysql version: unknown
php version: 5.6.40-68+0~20230902.80+debian11~1.gbpa2012b
Date: 28.03.2024 @ 18:22
Script: /main/jgs_galerie_userbilder.php?kategorie=2&bildid=115&sid=1a0ed48c3c3013d2d85891581b90e58e
Referer: