The connection was reset. developer mode

Frappe Framework
1

What is the tests that can be done to show what is wrong with the developer mode?

This is ubuntu 16. easy install. I did a bench start and went to the site. I have a connection was reset and I can not find the documentation on what commands can be used on how to check what is wrong.

2

What url are you trying to visit the site on?

3

site1.local

I reinstalled everything and it was fixed.