HTTP 500 Error after installation

I am using At&t hosting and just completed the installation, it went fine. The backend works perfectly, but the frontend just comes up with:

Server error
The website encountered an error while retrieving https://suchafindestateliquidation.com/. It may be down for maintenance or configured incorrectly.
Here are some suggestions:
Reload this webpage later.
HTTP Error 500 (Internal Server Error): An unexpected condition was encountered while the server was attempting to fulfill the request.

it happens no matter what I try to load, please help!!

it is: https://www.suchafindestateliquidation.com

Thanks!