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: 18.04.2024 @ 17:31
Script: /main/jgs_db.php?action=showkat&katid=5&sid=952ab3eb56b6eaa2a6d7e0930470568e
Referer: