Missing file(discourse.conf) when launching after lets encrypt update?

[pfaffman (Jay Pfaffman)]

Did you to it by hand, or did you take advantage of this:

Setting up HTTPS support with Let's Encrypt

Note: ./discourse-setup will enable Let’s Encrypt. And as of March 2017, you can run it again, and press return a few times and enter your email address rather than edit things by hand as described below. If you installed Discourse a long time ago, you might still have to edit app.yml by hand.