Rails 5.2 App push to Heroku successful. Heroku open fails.

Question

I successfully pushed a rails 5.2 app to Heroku, but there is an error somewhere. After this:

Heroku open

The browser shows this:

An error occurred in the application and your page could not be served.

In the terminal, when I type:

heroku ps

I get this:

web (Free): bin/rails server -p $PORT -e $RAILS_ENV (1) web.1: crashed

I am not sure where to look to troubleshoot this. I am new to programming and very new to Heroku.

If there is other information that would be useful, let me know. Thanks.

Answer 1

When your Rails 5.2 app is not serving on Heroku, use this for a detailed error log. It's extremely helpful.

$ heroku run rails console