failed to deploy rails app to heroku

Question

I am trying to deploy my rails app to heroku but but the following message in my heroku log:

/app/vendor/bundle/ruby/2.3.0/gems/activerecord-5.1.4/lib/active_record/connection_adapters/connection_specification.rb:188:in rescue in spec': Specified 'sqlite3' for database adapter, but the gem is not loaded. Addgem 'sqlite3'` to your Gemfile (and ensure its version is at the minimum required by ActiveRecord). (Gem::LoadError)

this is my Gemfile:

source 'https://rubygems.org'


gem 'rails', '5.1.4'
gem 'puma', '3.9.1'
gem 'sass-rails', '5.0.6'
gem 'uglifier', '3.2.0'
gem 'coffee-rails', '4.2.2'
gem 'turbolinks', '5.0.1'
gem 'jbuilder', '2.7.0'
gem 'rails-ujs'


group :development, :test do
  gem 'sqlite3', '1.3.13'
  gem 'byebug', '9.0.6', platform: :mri
end

group :development do
  gem 'web-console', '3.5.1'
  gem 'listen', '3.1.5'
  gem 'spring', '2.0.2'
  gem 'spring-watcher-listen', '2.0.1'
end

group :production do 
  gem 'pg', '0.20.0'
end

I've tried using the specific version of sqlite3 and the general one that uses the most recent version and neither one works.

have try to bundle after changing gemfile? because. database.yml is not important — 7urkm3n

Igor Ivancha Igor Ivancha · Accepted Answer · 2018-02-25T17:31:01

goodjobbin85, it means, you need to move gem 'sqlite3' from group :development, :test to group :development

if it fails in new deploy, try remove Gemfile.lock, do new bundle and git add/commit/push

failed to deploy rails app to heroku

2 Answers