Heroku problem : The page you were looking for doesn't exist

Question

I have followed book until chapter 5 finished and it\'s working OK in my linux workstation when I push to Heroku, all data pushed correctly but when I try to open Heroku (ht

Answer 1

Specify Ruby version in app Rails 5 requires Ruby 2.2.0 or above. Heroku has a recent version of Ruby installed by default, however you can specify an exact version by using the ruby DSL in your Gemfile.

At the end of Gemfile add:

ruby "2.4.1"