Checking if WordPress can make requests to itself 301 error on Hostgator

Simply Static plugin is not working with Hostgator. It was not moving and I checked the diagnostics and for the section “Checking if WordPress can make requests to itself from [IP address value]”, I see this error “Received a 301 response. This might indicate a problem.” In another test installation, I get this second error code “Received a 404 response”. Any thoughts how to fix this? Thanks!