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: 20.04.2024 @ 00:18
Script: /main/usercp.php?action=buddy&add=1&sid=da290ecf8f0e4e741548aa08c5ca150e
Referer: