Issue querying database

I'm completely new to CI, so I'm just following the tutorial. Everything was working well, except when trying to create a "news" item.
I'm being redirected to the actual IP address of my server, and 404 page generated by my hosting provider's cPanel is being displayed, with the message: "The server can not find the requested page:

198.20.112.34/cp_errordocument.shtml (port 443)"

I don't know what's going on here, as far as I can tell the CI database configuration is correct.