Fatal error: Connecting to MySQL server 'localhost' failed.

You get more information about the problem in our knowledge base: http://www.woltlab.com/help/?code=1045

Information:

error message: Connecting to MySQL server 'localhost' failed.
error code: 1045
sql type: MySQLDatabase
sql error: Access denied for user 'd00c68f3'@'localhost' (using password: YES)
sql error number: 1045
sql version:
file: /www/htdocs/w00ae057/forum_install/forum/lib/system/database/MySQLDatabase.class.php (29)
php version: 5.5.38-nmm2
wcf version: 1.0.11 pl 4 (Horizon)
date: Tue, 20 Nov 2018 16:14:25 +0000
request: /forum/index.php/index.php?page=User&userID=59%5Dabove%5B/url%5D
referer:

Stacktrace:

#0 /www/htdocs/w00ae057/forum_install/forum/lib/system/database/Database.class.php(76): MySQLDatabase->connect()
#1 /www/htdocs/w00ae057/forum_install/forum/lib/system/WCF.class.php(270): Database->__construct(...)
#2 /www/htdocs/w00ae057/forum_install/forum/lib/system/WCF.class.php(88): WCF->initDB()
#3 /www/htdocs/w00ae057/forum/global.php(18): WCF->__construct()
#4 /www/htdocs/w00ae057/forum/index.php(7): require_once('/www/htdocs/w00...')
#5 {main}