Unable to load backend after install on localhost setup

Hi @Begigi and welcome

We don’t typically support localhost installations on the forum as they’re very troublesome.

However, I believe your issue has nothing to do with the linked post. I simply believe that you’ve not enabled Apache Rewrite in your localhost environment. Refer to your localhost software documentation.

In the future, I would recommend using How to install Ubuntu Server 18.04 on Windows 10 (VirtualBox) if you would prefer to work locally.