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 @ 15:15
Script: /main/usercp.php?action=buddy&add=617&sid=d2a5b848f3489130c8af2503e17988ff
Referer: