Why did the deployment of a Rails application to DigitalOcean fail?

Question

Nginx

Developed a training project on Rails while learning this framework. Now I'm busy deploying it - for this I chose DigitalOcean hosting and a free domain from Freenom. Following this guide https://gorails.com/deploy/ubuntu/18.04#discussion there were no problems until the very end, but after deploying from Capistrano, instead of the site, I get a 403 error from nginx.

The Capistrano log is located here https://fex.net/026327502907?fileId=928037987 (you can choose a preview and download without registration)
It skips a couple of files about the middle but the result is successful. Who faced this problem, please help me understand what is wrong and how to successfully deploy?

Answer 1

I propose to immediately learn the right things: nginx and puma. Moreover, the puma works locally in the new versions of the rail, and not the songger.
Instructions for nginx and puma
My config template for nginx