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: 5.6.40-65+0~20230214.72+debian11~1.gbp473a1b
Date: 02.04.2023 @ 00:55
Script: /main/index.php?sid=f5a3a30b80f79c7f16c78255c68aa31d
Referer: