Deploy error on heroku #43
Description
-----> Ruby app detected
-----> Installing bundler 1.17.3
-----> Removing BUNDLED WITH version in the Gemfile.lock
-----> Compiling Ruby/Rails
Command: 'set -o pipefail; curl -L --fail --retry 5 --retry-delay 1 --connect-timeout 3 --max-time 30 https://s3-external-1.amazonaws.com/heroku-buildpack-ruby/heroku-18/ruby-2.2.4.tgz -s -o - | tar zxf - ' failed on attempt 1 of 3.
Command: 'set -o pipefail; curl -L --fail --retry 5 --retry-delay 1 --connect-timeout 3 --max-time 30 https://s3-external-1.amazonaws.com/heroku-buildpack-ruby/heroku-18/ruby-2.2.4.tgz -s -o - | tar zxf - ' failed on attempt 2 of 3.
!
! The Ruby version you are trying to install does not exist on this stack.
!
! You are trying to install ruby-2.2.4 on heroku-18.
!
! Ruby ruby-2.2.4 is present on the following stacks:
!
! - cedar-14
! - heroku-16
!
! Heroku recommends you use the latest supported Ruby version listed here:
! https://devcenter.heroku.com/articles/ruby-support#supported-runtimes
!
! For more information on syntax for declaring a Ruby version see:
! https://devcenter.heroku.com/articles/ruby-versions
!
! Push rejected, failed to compile Ruby app.
! Push failed
I have managed to change the stack, but only from a previously created app, but I can't find doing it with an app with auto deploy. Help please, I need an effective and easy way to manage sendgrid feedback.