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: 03.12.2023 @ 10:50
Script: /main/jgs_galerie_userbilder.php?userid=633&bildid=253&sid=b9c31d9af789d702388613b65b3125b7
Referer: