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 @ 11:06
Script: /main/jgs_db.php?action=show&eintrags_id=2&katid=8&sid=a7c05e24d7da50338f2c1e4cc1fb6155
Referer: