SQL-DATABASE ERROR

Database error in WoltLab Burning Board (): Link-ID == false, connect failed
mysql error: Access denied for user 'wbb23kontakt'@'localhost' (using password: YES)
mysql error number: 1045
mysql version: unknown
php version: 5.3.29
Date: 10.07.2020 @ 21:04
Script: /wbb23kontakt/index.php
Referer: