I checked the settings of wp-config.php file, and the database information is incorrect. Was there files already there from an older installation of Wordpress?
If this is a new installation from scratch, I would recommend uninstalling Wordpress
using Softaculous, then reinstalling it from scratch
Softaculous will setup the database information for you when it installs, so there should be no need to go in and modify the settings afterward.
If you have any further questions, feel free to post them below.