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: 19.04.2024 @ 23:03
Script: /main/jgs_galerie_userbilder.php?kategorie=8&bildid=246&sid=b3e73e7da5f9a01efcb1adbf0ba3abe7
Referer: