My ERROR [256] SQL ERROR [ mysqli ]

Access denied for user 'fuhrer_main'@'localhost' to database 'fuhrer_main' [1044]

Fatal error

on line 1004
in file /00_katili/fuhrer/html/vhost/fuhrer.web.id/public_html/home/libs/phpbb/db/driver/driver.php
PHP 7.2.19-1+ubuntu16.04.1+deb.sury.org+1 (Linux)
Aborting...