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: 16.04.2024 @ 18:07
Script: /main/jgs_db.php?action=showkat&katid=5&sid=15a27f418e08f7fb8f5a1bf7f4fc665f
Referer: